{"title":"Hanna Water Quality Meters","description":"\u003cscript language=\"JavaScript\"\u003e function openDir( form ) { \tvar newIndex = form.fieldname.selectedIndex; \tif ( newIndex == 0 ) { \t} else { \t\tcururl = form.fieldname.options[ newIndex ].value; \t\twindow.location.assign( cururl ); \t} } \u003c\/script\u003e \u003ctable width=\"100%\" cellpadding=\"4\" cellspacing=\"0\" border=\"0\"\u003e \u003cform name=\"form\"\u003e \t\u003ctr\u003e \t\t\u003ctd nowrap\u003e \u003cp\u003e\u003cfont size=\"+1\"\u003e\u003cb\u003e\u003ci\u003eFilter By:\u003c\/i\u003e\u003c\/b\u003e\u003c\/font\u003e \t\t \u003cselect name=\"fieldname\" size=\"1\" onchange=\"openDir( this.form )\"\u003e \t\t \u003coption\u003e--Meter Type--\u003c\/option\u003e \t\t \u003coption value=\"\/Chlorine-_c_2826.html\"\u003eChlorine\u003c\/option\u003e \u003coption value=\"\/Chlorine-Dioxide_c_2891.html\"\u003eChlorine Dioxide\u003c\/option\u003e \t\t \u003coption value=\"\/Copper_c_2828.html\"\u003eCopper\u003c\/option\u003e \t\t \u003coption value=\"\/Dissolved-Oxygen-DO_c_2829.html\"\u003eDissolved Oxygen (DO)\u003c\/option\u003e \t\t \u003coption value=\"\/Electro-Conductivity-EC_c_2825.html\"\u003eElectro Conductivity (EC)\u003c\/option\u003e \t\t \u003coption value=\"\/Hardness_c_2830.html\"\u003eHardness\u003c\/option\u003e \t\t \u003coption value=\"\/Iron_c_2831.html\"\u003eIron\u003c\/option\u003e \t\t \u003coption value=\"\/Oxygen-Reduction-Potential-ORP_c_2833.html\"\u003eOxygen Reduction Potential (ORP)\u003c\/option\u003e \t\t \u003coption value=\"\/pH_c_2824.html\"\u003epH\u003c\/option\u003e \t\t \u003coption value=\"\/Silica-Colorimeter_c_2827.html\"\u003eSilica Colorimeter\u003c\/option\u003e \t\t \u003coption value=\"\/Sulfite_c_2832.html\"\u003eSulfite\u003c\/option\u003e \t\t \u003coption value=\"\/Total-Dissolved-Solids-TDS_c_2823.html\"\u003eTotal Dissolved Solids (TDS)\u003c\/option\u003e \t\t \u003c\/select\u003e \u003c\/p\u003e \t \u003c\/td\u003e \t\u003c\/tr\u003e \u003c\/form\u003e \u003c\/table\u003e ","products":[{"product_id":"hanna-hi98308-pure-h2o-pwt-conductivity-meter-0-1-99-9-µs-cm","title":"Hanna (HI98308) Pure H2O \"PWT\" Conductivity Meter 0.1-99.9 µS-cm","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments – Laboratory Grade Conductivity Testing\u003c\/div\u003e\n\u003ch2\u003e\n\u003cem\u003eHI98308 Pure H2O (PWT) Conductivity Meter\u003c\/em\u003e – 0.1-99.9 µS\/cm Range\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003ePrecision handheld tester for verifying the purity of distilled, demineralized, and deionized water in lab and industrial settings\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ ±2% Full Scale Accuracy\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Automatic Temperature Compensation\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 250-Hour Battery Life\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Industrial-Grade Durability\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Hanna HI98308 PWT is engineered for accurate conductivity measurement in ultra-pure water applications where low ion content is critical. With a \u003cstrong\u003e0.0 to 99.9 µS\/cm range\u003c\/strong\u003e and \u003cstrong\u003e0.1 µS\/cm resolution\u003c\/strong\u003e, it delivers reliable readings for quality control in PCB manufacturing, laboratory distillation systems, battery water testing, and steam cleaning operations. Automatic temperature compensation from 0 to 50°C ensures accurate measurements across varying conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eKEY FEATURES\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eBuilt for Purity Verification in Demanding Environments\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔬\u003c\/span\u003e\n\u003ch3\u003eLow Conductivity Range\u003c\/h3\u003e\n\u003cp\u003e0.0 to 99.9 µS\/cm measurement range optimized for pure, distilled, and demineralized water testing\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🎯\u003c\/span\u003e\n\u003ch3\u003eHigh Precision\u003c\/h3\u003e\n\u003cp\u003e0.1 µS\/cm resolution with ±2% full scale accuracy for reliable quality control measurements\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🌡️\u003c\/span\u003e\n\u003ch3\u003eAuto Temperature Compensation\u003c\/h3\u003e\n\u003cp\u003eBuilt-in ATC from 0 to 50°C eliminates manual temperature correction and ensures consistent readings\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🏭\u003c\/span\u003e\n\u003ch3\u003eIndustrial Durability\u003c\/h3\u003e\n\u003cp\u003eRugged housing withstands harsh environments; larger LCD and ergonomic design for easier field use\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔋\u003c\/span\u003e\n\u003ch3\u003eExtended Battery Life\u003c\/h3\u003e\n\u003cp\u003e4 x 1.5V batteries provide approximately 250 hours of continuous operation before replacement\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e⚙️\u003c\/span\u003e\n\u003ch3\u003eSimple Calibration\u003c\/h3\u003e\n\u003cp\u003eManual 1-point calibration with included screwdriver keeps the meter accurate and field-serviceable\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eIdeal for Lab, Industrial, and Field Testing\u003c\/h3\u003e\n\u003cp\u003eThe Hanna HI98308 PWT conductivity meter is designed for verifying water purity in laboratory distillation systems, reverse osmosis output monitoring, printed circuit board washing stations, industrial steam cleaning equipment, automotive battery water testing, and pharmaceutical-grade water production. Compatible with any application requiring conductivity measurement in the 0.1 to 99.9 µS\/cm range. Comes complete with protective cap, calibration screwdriver, batteries, and instruction manual.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eHanna Instruments has been manufacturing precision water quality testing equipment for over 40 years, trusted by laboratories and industrial facilities worldwide for accuracy and reliability.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470328430754,"sku":"HI98308","price":160.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi98308-pure-h2o-pwt-conductivity-meter-01-999-us-cm-523683.jpg?v=1762459530"},{"product_id":"hanna-hi98501-thermometers-with-50-to-150-c-range-and-1-c-accuracy","title":"Hanna (HI98501) Thermometers with -50 to 150°C Range and ±1°C Accuracy","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n\u003ch2\u003eHanna \u003cem\u003eHI98501\u003c\/em\u003e Checktemp1 Digital Thermometer\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eCompact digital thermometer with stainless steel probe for fast, accurate temperature measurement in water, soil, semisolids, and gas applications from -50°C to 150°C\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e±1°C Accuracy\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e0.1°C Resolution\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e3000 Hour Battery\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eBuilt for field testing and industrial temperature monitoring\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🌡️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eWide Temperature Range\u003c\/h3\u003e\n\u003cp\u003eThe HI98501 measures from -50.0°C to 150.0°C with 0.1°C resolution, covering cold storage, ambient water testing, and industrial heating applications without switching instruments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e⚡\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eFast Response Time\u003c\/h3\u003e\n\u003cp\u003eDirect-contact stainless steel probe delivers rapid readings in liquids, semisolids, soil, and even gas environments. Ideal for HVAC testing, boiler monitoring, and field work where speed matters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔧\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eDurable Probe Design\u003c\/h3\u003e\n\u003cp\u003e105mm stainless steel probe with 3mm diameter penetrates soil and semisolid media easily while withstanding industrial use. Compact meter body fits in a pocket or tool kit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔋\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eExtended Battery Life\u003c\/h3\u003e\n\u003cp\u003eSingle 1.5V battery provides approximately 3000 hours of continuous operation. The HI98501 is ready when you need it, with minimal downtime for replacements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eTechnical details for the HI98501 Checktemp1\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHI98501\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-50.0 to 150.0°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.1°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±1°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe\u003c\/td\u003e\n\u003ctd\u003eStainless steel, 105 x 3mm diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery\u003c\/td\u003e\n\u003ctd\u003e1 x 1.5V, approximately 3000 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Environment\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C, RH max 95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e66 x 50 x 25mm (meter only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e50g (meter only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eApplications for the Hanna HI98501\u003c\/h3\u003e\n\u003cp\u003eThe HI98501 Checktemp1 thermometer works in water quality testing, reverse osmosis system monitoring, HVAC troubleshooting, boiler and industrial heating plant operations, soil temperature measurement, and food service applications. The stainless steel probe penetrates semisolid media and responds quickly in gas environments. Suitable for field technicians, water treatment operators, and industrial maintenance teams who need portable, reliable temperature measurement across a wide range.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e📦\u003c\/div\u003e\n\u003ch4\u003eCompact Design\u003c\/h4\u003e\n\u003cp\u003ePocket-sized meter with integrated probe fits in any tool kit or field bag\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💧\u003c\/div\u003e\n\u003ch4\u003eMulti-Environment\u003c\/h4\u003e\n\u003cp\u003eMeasures temperature in liquids, semisolids, soil, and gas applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🎯\u003c\/div\u003e\n\u003ch4\u003eReliable Accuracy\u003c\/h4\u003e\n\u003cp\u003e±1°C accuracy across the full -50 to 150°C range with 0.1°C resolution\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e⏱️\u003c\/div\u003e\n\u003ch4\u003eLong Runtime\u003c\/h4\u003e\n\u003cp\u003e3000 hours of continuous use from a single 1.5V battery\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470328725666,"sku":"HI98501","price":159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi98501-thermometers-with-50-to-1500c-range-and-10c-accuracy-450732.jpg?v=1762459530"},{"product_id":"hanna-hi3812-hardness-kit-110-test-w-case","title":"Hanna (HI3812) Hardness Kit 110 Test W-Case","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI3812 Hardness Test Kit delivers laboratory-grade EDTA titration testing for calcium and magnesium ions, providing 110 reliable tests across two ranges: 0-30 mg\/L and 0-300 mg\/L. Packaged with reagents, buffer solutions, and a durable carrying case, this kit enables precise hardness classification from very soft to very hard water conditions.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eTest Kit Performance\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTest Method\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eEDTA Titration\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eChemical analysis standard\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eRange Coverage\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0-300 mg\/L\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eDual range capability\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eResolution\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0.3 \u0026amp; 3 mg\/L\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003ePrecision increments\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTotal Tests\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e110 Tests\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eExtended test capacity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eKit Weight\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e460 g\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003ePortable format\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003ePackage\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eHard Case\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eProtected storage\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eHanna HI3812 Kit Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHI3812\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTest Ranges\u003c\/td\u003e\n\u003ctd\u003e0.0-30.0 mg\/L (low), 0-300 mg\/L (high)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmallest Increment\u003c\/td\u003e\n\u003ctd\u003e0.3 mg\/L (low range), 3 mg\/L (high range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical Method\u003c\/td\u003e\n\u003ctd\u003eEDTA complexometric titration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Tests\u003c\/td\u003e\n\u003ctd\u003e110 tests included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Reagents\u003c\/td\u003e\n\u003ctd\u003eCalmagite indicator, Hardness Buffer HI3812-0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e460 g with case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWhen to Use This Kit\u003c\/h2\u003e\n\u003cp\u003eThe HI3812 is designed for regular monitoring of water hardness in residential, commercial, and industrial applications where calcium and magnesium control is critical. Use this kit to classify water on the standard hardness scale—from very soft (0-70 mg\/L) through very hard (420+ mg\/L)—to prevent scaling in boilers, cooling towers, reverse osmosis systems, and household plumbing. The dual-range capability makes it suitable for both softened water verification and untreated supply analysis. Hanna's EDTA titration method is recognized for accuracy in determining total hardness expressed as CaCO₃ equivalents.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 \u003cstrong\u003ePro Tip:\u003c\/strong\u003e Test hardness before and after water softeners to verify regeneration cycles and resin bed performance. Consistent monitoring prevents costly scale buildup in RO membranes and heat exchangers.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470329020578,"sku":"HI3812","price":107.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536672841890-padded.jpg?v=1777264858"},{"product_id":"hanna-hi3822-sulfite-test-kit-110-tests","title":"Hanna (HI3822) Sulfite Test Kit; 110 Tests","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n\u003ch2\u003e\u003cem\u003eHI3822 Sulfite Test Kit\u003c\/em\u003e\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003eIodometric titration testing for sulfite in water systems, industrial processes, and environmental monitoring\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 110 tests per kit\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Dual range capability\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Titration method\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Environmental analysis\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Hanna HI3822 uses iodometric titration to measure sulfite concentrations in water heating systems, food processing applications, and environmental samples. With dual testing ranges of \u003cstrong\u003e0.0-20.0 mg\/L\u003c\/strong\u003e and \u003cstrong\u003e0-200 mg\/L\u003c\/strong\u003e, this kit delivers approximately \u003cstrong\u003e110 tests\u003c\/strong\u003e for comprehensive water quality analysis where sulfite monitoring is critical for corrosion prevention and aquatic life protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eKEY FEATURES\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eTesting Capabilities\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e📊\u003c\/span\u003e\n\u003ch3\u003eDual Range Testing\u003c\/h3\u003e\n\u003cp\u003eLow range 0.0-20.0 mg\/L with 0.2 mg\/L increments, high range 0-200 mg\/L with 2 mg\/L increments for varied applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔬\u003c\/span\u003e\n\u003ch3\u003eIodometric Method\u003c\/h3\u003e\n\u003cp\u003eProven titration chemistry for accurate sulfite measurement in industrial and environmental water samples\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e💧\u003c\/span\u003e\n\u003ch3\u003eOxygen Scavenger Testing\u003c\/h3\u003e\n\u003cp\u003eMonitor sulfite levels in water heating systems where it functions as an oxygen scavenger to prevent corrosion\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🏭\u003c\/span\u003e\n\u003ch3\u003eIndustrial Applications\u003c\/h3\u003e\n\u003cp\u003eTest sulfite preservatives in food processing and detect high concentrations that may lower pH and facilitate corrosion\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🌊\u003c\/span\u003e\n\u003ch3\u003eEnvironmental Monitoring\u003c\/h3\u003e\n\u003cp\u003eTrack sulfite toxicity to aquatic life and its impact on ecological equilibrium in rivers, ponds, and lakes\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e📦\u003c\/span\u003e\n\u003ch3\u003eComplete Kit\u003c\/h3\u003e\n\u003cp\u003eApproximately 110 tests included, complete with reagents and instructions for immediate field or lab use\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eTesting Environments\u003c\/h3\u003e\n\u003cp\u003eThe Hanna HI3822 Sulfite Test Kit is designed for water quality testing in industrial water heating systems, food processing facilities monitoring preservative levels, municipal and environmental laboratories conducting aquatic toxicity assessments, and field testing where sulfite oxidation to sulfate must be tracked. Compatible with Hanna's broader line of water quality meters and testing solutions for comprehensive water analysis programs. Ideal for facilities requiring routine sulfite monitoring to prevent corrosion, maintain water chemistry balance, and ensure regulatory compliance for environmental discharge.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eHanna Instruments has been manufacturing precision water testing equipment for decades, trusted by water treatment professionals and environmental laboratories worldwide.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470329053346,"sku":"HI3822","price":200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi3822-sulfite-test-kit-110-tests-717996.jpg?v=1759500217"},{"product_id":"hanna-hi98301-dist1-tds-tester-with-1-ppm-resolution-range-up-to-1990-ppm-meter","title":"Hanna (HI98301) DiST1 TDS Tester with 1 ppm Resolution, Range up to 1990 ppm Meter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI98301 DiST1 TDS Tester delivers fast, accurate total dissolved solids measurements from 0 to 1990 ppm with 1 ppm resolution, making it ideal for verifying reverse osmosis system performance and water quality testing. Its graphite sensors resist oxidation for reliable repeatability, while automatic temperature compensation and a redesigned ergonomic casing ensure consistent readings in the field or lab.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eHanna HI98301 DiST1 Key Features\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMeasurement Range\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0–1990 ppm\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003e1 ppm resolution\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eAccuracy\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e±2% F.S.\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eFull scale accuracy\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTemperature Comp\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eAutomatic\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003e0 to 50°C range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eCalibration\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eManual 1-point\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eHI 70032 solution\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eSensor Type\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eGraphite\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eNon-oxidizing\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eBattery Life\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e200 hours\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003e4 x 1.5V batteries\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eComplete Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHanna HI98301 DiST1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTDS Factor\u003c\/td\u003e\n\u003ctd\u003e0.5 (NaCl conversion)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe\u003c\/td\u003e\n\u003ctd\u003eHI 73301 with exposed temperature sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Environment\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C (32 to 122°F), RH max 95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e175 x 41 x 23 mm (6.9 x 1.6 x 0.9 inches)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e95 g (3.4 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eLarge LCD, easy-view design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eIdeal Uses for the HI98301\u003c\/h2\u003e\n\u003cp\u003eThe Hanna HI98301 DiST1 TDS Tester is perfect for testing reverse osmosis system output, verifying water quality in hydroponics and aquariums, monitoring drinking water, and field testing applications. The graphite sensors eliminate the oxidation issues common with metal electrodes, providing consistent readings over time. Its pocket-sized design and automatic temperature compensation make it reliable for both home users checking RO membrane performance and professionals conducting water quality assessments. The air-bubble-escape casing design and fast-response temperature sensor ensure accurate measurements even in varying conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 For most accurate results, rinse the probe with distilled water between measurements and calibrate monthly using Hanna HI 70032 calibration solution. Pure RO water should measure below 10 ppm, while tap water typically ranges from 100 to 400 ppm depending on your location.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470535524514,"sku":"HI98301","price":140.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi98301-dist1-tds-tester-with-1-ppm-resolution-range-up-to-1990-ppm-meter-631192.jpg?v=1759500369"},{"product_id":"hanna-hi98302-dist2-tds-tester-with-0-01-ppm-resolution-range-up-to-10000-ppm-meter","title":"Hanna (HI98302) DiST2 TDS Tester with 0.01 ppm Resolution, Range up to 10000 ppm Meter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n\u003ch2\u003e\u003cem\u003eHI98302 DiST2 TDS Tester\u003c\/em\u003e\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eProfessional-grade pocket meter with 0.01 ppm resolution and graphite sensors for consistent, accurate total dissolved solids measurement up to 10,000 ppm\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e0.01 ppm Resolution\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eAutomatic Temperature Compensation\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e±2% Accuracy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eBuilt for reliability and precision in the field\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔬\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eGraphite Sensors\u003c\/h3\u003e\n\u003cp\u003eNon-oxidizing graphite electrodes deliver better repeatability and longer sensor life compared to metal alternatives\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🌡️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eExposed Temperature Sensor\u003c\/h3\u003e\n\u003cp\u003eFast-response temperature probe enables automatic compensation from 0 to 50°C for accurate readings in any condition\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e💧\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eAir Bubble Release Design\u003c\/h3\u003e\n\u003cp\u003eEngineered casing allows trapped air to escape from the electrode chamber for consistent contact with test solution\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔧\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eField Calibration\u003c\/h3\u003e\n\u003cp\u003eManual one-point calibration via side trimmer lets you adjust accuracy on-site using HI 70032 calibration solution\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📊\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eWide Range Coverage\u003c\/h3\u003e\n\u003cp\u003eMeasures from 0.00 to 10.00 ppt with 0.01 ppt resolution, covering municipal water, RO permeate, and high-TDS sources\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eHanna HI98302 DiST2 Technical Details\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution \/ Range\u003c\/td\u003e\n\u003ctd\u003e0.00 to 10.00 ppt \/ 0.01 ppt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±2% Full Scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTDS Conversion Factor\u003c\/td\u003e\n\u003ctd\u003e0.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalibration\u003c\/td\u003e\n\u003ctd\u003eManual, 1 point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Compensation\u003c\/td\u003e\n\u003ctd\u003eAutomatic, 0 to 50°C (32 to 122°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Model\u003c\/td\u003e\n\u003ctd\u003eHI 73301\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalibration Solution\u003c\/td\u003e\n\u003ctd\u003eHI 70032\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Type \/ Life\u003c\/td\u003e\n\u003ctd\u003e4 x 1.5V \/ approx. 200 hours continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Environment\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C, RH max 95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e175 x 41 x 23 mm (6.9 x 1.6 x 0.9\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e95 g (3.4 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eMAINTENANCE\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eCalibration and replacement schedule\u003c\/h3\u003e\n\u003cdiv class=\"filter-schedule\"\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eAs Needed\u003c\/div\u003e\n\u003ch4\u003eCalibration Check\u003c\/h4\u003e\n\u003cp\u003eVerify accuracy with HI 70032 calibration solution. Adjust trimmer if readings drift beyond ±2% of known standard\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eWhen Worn\u003c\/div\u003e\n\u003ch4\u003eProbe Replacement\u003c\/h4\u003e\n\u003cp\u003eReplace HI 73301 probe when sensor becomes fouled, damaged, or no longer responds to calibration adjustment\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003e200 Hours\u003c\/div\u003e\n\u003ch4\u003eBattery Replacement\u003c\/h4\u003e\n\u003cp\u003eReplace four 1.5V batteries when display dims or readings become erratic during continuous field use\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🎯\u003c\/div\u003e\n\u003ch4\u003ePocket-Sized Precision\u003c\/h4\u003e\n\u003cp\u003eProfessional-grade accuracy in a compact tester that fits in your shirt pocket for testing anywhere\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e⚡\u003c\/div\u003e\n\u003ch4\u003eInstant Results\u003c\/h4\u003e\n\u003cp\u003eFast-response sensor and large LCD deliver clear readings in seconds without waiting for stabilization\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🛡️\u003c\/div\u003e\n\u003ch4\u003eReinforced Build\u003c\/h4\u003e\n\u003cp\u003eRedesigned casing provides increased strength and better ergonomics for daily use in demanding environments\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🔋\u003c\/div\u003e\n\u003ch4\u003eExtended Runtime\u003c\/h4\u003e\n\u003cp\u003e200 hours of continuous operation on standard batteries means weeks of field testing between changes\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470535557282,"sku":"HI98302","price":135.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi98302-dist2-tds-tester-with-001-ppm-resolution-range-up-to-10000-ppm-meter-709129.jpg?v=1759500369"},{"product_id":"hanna-hi98303-dist3-conductivity-ec-tester-1-µs-cm-resolution-range-up-to-1990-µs-cm-meter","title":"Hanna (HI98303) DiST3 Conductivity EC Tester, 1 µS-cm Resolution, Range up to 1990 µS-cm Meter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n \u003cdiv class=\"ro-hero\"\u003e\n \u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments Water Quality Testing\u003c\/div\u003e\n \u003ch2\u003e\u003cem\u003eHI98303 DiST3 Conductivity EC Tester\u003c\/em\u003e\u003c\/h2\u003e\n \u003cp class=\"ro-tagline\"\u003ePocket-sized conductivity meter with 1 µS\/cm resolution and automatic temperature compensation for reliable water quality monitoring up to 1990 µS\/cm\u003c\/p\u003e\n \u003cdiv class=\"ro-badges\"\u003e\n \u003cspan class=\"ro-badge\"\u003e✓ Graphite sensors resist oxidation\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003e✓ Auto temperature compensation\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003e✓ 200-hour battery life\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003e✓ Fast-response exposed sensor\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-callout\"\u003e\n \u003cp\u003eThe Hanna HI98303 DiST3 delivers accurate conductivity readings with \u003cstrong\u003e1 µS\/cm resolution\u003c\/strong\u003e across a range of \u003cstrong\u003e0 to 1990 µS\/cm\u003c\/strong\u003e, making it ideal for testing RO water, distilled water, and low-conductivity filtration systems. The redesigned casing improves grip and durability, while the exposed temperature sensor ensures rapid equilibration for \u003cstrong\u003e±2% full-scale accuracy\u003c\/strong\u003e.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eKEY FEATURES\u003c\/div\u003e\n \u003ch3 class=\"ro-title\"\u003eBuilt for Reliable Field and Lab Testing\u003c\/h3\u003e\n \u003cdiv class=\"ro-feature-grid\"\u003e\n \u003cdiv class=\"ro-feature-card\"\u003e\n \u003cspan class=\"ro-feat-icon\"\u003e⚡\u003c\/span\u003e\n \u003ch3\u003eGraphite Sensor Technology\u003c\/h3\u003e\n \u003cp\u003eNon-oxidizing graphite electrodes provide consistent, repeatable readings over time without sensor degradation\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ro-feature-card\"\u003e\n \u003cspan class=\"ro-feat-icon\"\u003e🌡️\u003c\/span\u003e\n \u003ch3\u003eAutomatic Temperature Compensation\u003c\/h3\u003e\n \u003cp\u003eExposed temperature sensor compensates for water temp from 0 to 50°C with fast response time\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ro-feature-card\"\u003e\n \u003cspan class=\"ro-feat-icon\"\u003e🔧\u003c\/span\u003e\n \u003ch3\u003eSimple Manual Calibration\u003c\/h3\u003e\n \u003cp\u003eOne-point calibration with HI 70031 solution using side trimmer adjustment for field recalibration\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ro-feature-card\"\u003e\n \u003cspan class=\"ro-feat-icon\"\u003e💧\u003c\/span\u003e\n \u003ch3\u003eAir Bubble Escape Design\u003c\/h3\u003e\n \u003cp\u003eEngineered casing allows trapped air to escape from sensor area for more accurate readings\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ro-feature-card\"\u003e\n \u003cspan class=\"ro-feat-icon\"\u003e🔋\u003c\/span\u003e\n \u003ch3\u003eExtended Battery Life\u003c\/h3\u003e\n \u003cp\u003eFour 1.5V batteries provide approximately 200 hours of continuous operation\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"ro-feature-card\"\u003e\n \u003cspan class=\"ro-feat-icon\"\u003e📱\u003c\/span\u003e\n \u003ch3\u003eCompact and Readable\u003c\/h3\u003e\n \u003cp\u003eLarge LCD display on a pocket-sized unit at 175 x 41 x 23 mm and just 95 grams\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n \u003ch3 class=\"ro-title\"\u003eTechnical Details\u003c\/h3\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003ctr\u003e\n \u003ctd\u003eRange\u003c\/td\u003e\n \u003ctd\u003e0 to 1999 µS\/cm\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eResolution\u003c\/td\u003e\n \u003ctd\u003e1 µS\/cm\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eAccuracy\u003c\/td\u003e\n \u003ctd\u003e±2% full scale\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTemperature Compensation\u003c\/td\u003e\n \u003ctd\u003eAutomatic, 0 to 50°C (32 to 122°F)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCalibration\u003c\/td\u003e\n \u003ctd\u003eManual, 1-point with HI 70031 solution\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eProbe\u003c\/td\u003e\n \u003ctd\u003eHI 73303 (graphite sensors)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eBattery\u003c\/td\u003e\n \u003ctd\u003e4 x 1.5V, approx. 200 hours continuous use\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOperating Environment\u003c\/td\u003e\n \u003ctd\u003e0 to 50°C, RH max 95%\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDimensions\u003c\/td\u003e\n \u003ctd\u003e175 x 41 x 23 mm (6.9 x 1.6 x 0.9\")\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWeight\u003c\/td\u003e\n \u003ctd\u003e95 g (3.4 oz)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n \u003ch3 class=\"ro-title\"\u003eIdeal Testing Applications\u003c\/h3\u003e\n \u003cp\u003eThe Hanna HI98303 DiST3 is designed for testing reverse osmosis permeate, deionized water, distilled water, and low-conductivity aquarium or hydroponic systems. It pairs with Hanna HI 70031 calibration solution and uses the replaceable HI 73303 probe. Perfect for verifying RO system performance, monitoring filter effectiveness, and ensuring water purity in laboratories, industrial facilities, and home filtration systems where conductivity below 2000 µS\/cm is expected.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-callout\"\u003e\n \u003cp\u003eHanna Instruments has been manufacturing precision water quality meters for over 40 years, trusted by professionals worldwide for accuracy and durability.\u003c\/p\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470536310946,"sku":"HI98303","price":135.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi98303-dist3-conductivity-ec-tester-1-us-cm-resolution-range-up-to-1990-us-cm-meter-525587.jpg?v=1759500371"},{"product_id":"hanna-hi98103-checker-1-ph-tester-1270-probe","title":"Hanna (HI98103) Checker 1; pH Tester, 1270 Probe","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI98103 Checker 1 is a portable pH tester that delivers fast, accurate readings from 0.0 to 14.0 pH on a large LCD display with 0.1 pH resolution and ±0.2 pH accuracy. Equipped with the replaceable HI 1270 screw-connector electrode and simple 2-point calibration, it's designed for aquariums, pools, ponds, and general water testing applications.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eKey Performance Metrics\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003epH Range\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0.0 to 14.0\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eMeter range; electrode HI 1270 measures 0.0 to 13.0\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eResolution\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0.1 pH\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eClear incremental readings\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eAccuracy\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e±0.2 pH\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eReliable precision for general use\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eBattery Life\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e3000 hours\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eContinuous use on 2 x 1.5V batteries\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eCalibration\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eManual 2-point\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eVia trim adjustment screws\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e1 year meter\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003e6 months for HI 1270 electrode\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eFull Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHanna HI98103 Checker 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Electrode\u003c\/td\u003e\n\u003ctd\u003eHI 1270 with screw connector (replaceable with any Hanna pH electrode using screw connector)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C (32 to 122°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e66 x 50 x 25 mm (7.9 x 1.1 x 0.8 inches)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e70 g (2.5 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eLarge LCD with reading stability indicator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Source\u003c\/td\u003e\n\u003ctd\u003e2 x 1.5V batteries (approximately 3000 hours continuous use)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eIdeal Use Cases\u003c\/h2\u003e\n\u003cp\u003eThe HI98103 Checker 1 is built for general water testing in aquariums, swimming pools, ponds, hydroponics, and other environments where pH monitoring is essential. The replaceable HI 1270 electrode can be swapped with any Hanna pH electrode featuring a screw connector, giving you flexibility for specialized applications. Calibration requires pH buffer solutions (sold separately), and the electrode must be conditioned by soaking in pH 7 buffer for a few hours before first use. Lightweight and portable at 70 grams, this tester is easy to carry to remote testing sites or move between multiple water sources.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 When you first receive the Hanna HI98103, the electrode will be dry. Condition it by soaking the tip in pH 7 buffer solution for at least two hours before calibration to ensure accurate, stable readings from day one.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470537097378,"sku":"HI98103","price":137.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536734970018-padded.jpg?v=1777265152"},{"product_id":"hanna-hi98127-phep4-dig-ph-temp-0-14ph-w-p-atc","title":"Hanna (HI98127) pHEP4; DIG. pH \u0026 TEMP. (0-14pH); W-P, ATC","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI98127 pHEP4 delivers laboratory-grade pH and temperature readings in a waterproof, pocket-sized digital meter designed for field testing and everyday water monitoring. With automatic temperature compensation and interchangeable electrodes, this tester gives you reliable 0.0 to 14.0 pH measurements across aquariums, pools, ponds, and general water quality applications.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eHanna HI98127 pHEP4 Technical Details\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHI98127 pHEP4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Range\u003c\/td\u003e\n\u003ctd\u003e0.0 to 14.0 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Resolution\u003c\/td\u003e\n\u003ctd\u003e0.1 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Compensation\u003c\/td\u003e\n\u003ctd\u003eAutomatic (ATC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrode Type\u003c\/td\u003e\n\u003ctd\u003eInterchangeable screw connector (compatible with all Hanna pH electrodes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eLarge LCD with pH and temperature readout\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eWaterproof housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Applications\u003c\/td\u003e\n\u003ctd\u003eAquariums, pools, ponds, drinking water, hydroponics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eSetup and Calibration Procedure\u003c\/h2\u003e\n\u003col class=\"install-steps\"\u003e\n\u003cli\u003eCondition the electrode by soaking the tip in pH 7 buffer solution for at least 2 hours before first use (electrode ships dry and must be hydrated).\u003c\/li\u003e\n\u003cli\u003eCalibrate the meter using one-point or two-point calibration with Hanna pH buffer solutions (pH 4.01, 7.01, or 10.01 recommended, sold separately).\u003c\/li\u003e\n\u003cli\u003eRinse the electrode with distilled or deionized water between samples and gently blot dry with a lint-free tissue.\u003c\/li\u003e\n\u003cli\u003eSubmerge the electrode in the sample liquid, allow reading to stabilize, then record pH and temperature values from the LCD display.\u003c\/li\u003e\n\u003cli\u003eStore the electrode wet in pH 7 buffer or storage solution to maintain responsiveness and extend electrode life.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eElectrode and Accessory Options\u003c\/h2\u003e\n\u003cp\u003eThe HI98127 pHEP4 accepts any Hanna pH electrode with a screw-in connector, allowing you to swap electrodes based on application or replace worn probes without replacing the entire meter. Calibration requires separate purchase of pH buffer solutions (pH 4.01, 7.01, and 10.01 sachets or bottles available from Hanna). Electrode storage solution and cleaning solutions are also recommended for long-term accuracy and to prevent junction fouling or glass membrane degradation.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n🔧 Always store your pH electrode in proper storage solution or pH 7 buffer, never in distilled water. Distilled water causes the reference junction to leach ions and leads to slow, drifting readings or complete electrode failure.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470537326754,"sku":"HI98127","price":240.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi98127-phep4-dig-ph-temp-0-14ph-w-p-atc-991086.jpg?v=1759500375"},{"product_id":"hanna-hi98129-the-new-combo-ph-tds-cond-temp","title":"Hanna (HI98129) The New Combo; pH,TDS,Cond. \u0026 Temp.","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI98129 Combo tester delivers professional-grade pH, EC, TDS, and temperature measurements in a single waterproof handheld unit, eliminating the need to swap between multiple meters in the field or lab. Engineered with automatic calibration, graphite EC\/TDS electrodes that resist contamination, and a replaceable pH electrode cartridge for extended service life.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eKey Measurement Capabilities\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003epH Range\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0.0 to 14.0 pH\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003e±0.1 pH accuracy\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eEC Range\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0 to 3999 µS\/cm\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eGraphite electrode\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTDS Range\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0 to 2000 ppm\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eAutomatic conversion\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTemperature\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0.0 to 60.0°C\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eStainless steel probe\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eCalibration\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eAutomatic ATC\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003epH \u0026amp; temperature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eWaterproof IP67\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eFloat-on-water design\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eHanna HI98129 Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHI98129 Combo pH\/EC\/TDS\/Temperature Tester\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Electrode\u003c\/td\u003e\n\u003ctd\u003eHI 73127 replaceable cartridge with gel electrolyte\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEC\/TDS Electrode\u003c\/td\u003e\n\u003ctd\u003eGraphite material, contamination resistant, built-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eLCD with hold and freeze functions for recording data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e4 x 1.5V batteries (included), auto-shutoff after 8 min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e176 x 41 x 25 mm, lightweight portable design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Accessories\u003c\/td\u003e\n\u003ctd\u003eHI 73127 pH electrode, batteries, electrode replacement tool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eIdeal for Water Testing Professionals\u003c\/h2\u003e\n\u003cp\u003eThe HI98129 is designed for testing reverse osmosis permeate and feedwater, monitoring hydroponic nutrient solutions, pool and spa water chemistry, aquarium water parameters, and drinking water quality verification. The graphite EC\/TDS electrode resists fouling from organic samples and the replaceable pH cartridge design allows you to swap the sensing element in seconds without tools. Waterproof IP67 housing floats if dropped in water and the automatic temperature compensation ensures accurate readings across varying sample temperatures. Ideal for filtration technicians, water treatment professionals, laboratory staff, and anyone requiring multi-parameter water testing without carrying multiple instruments.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 The replaceable pH electrode cartridge on the HI98129 extends the life of your investment significantly compared to sealed combo testers where the entire unit must be replaced when the pH sensor degrades.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470537588898,"sku":"HI98129","price":385.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536735559842-padded.jpg?v=1777265168"},{"product_id":"hanna-hi98130-combo-ph-ec-tds-temp","title":"Hanna (HI98130) Combo; pH, EC, TDS \u0026 TEMP.","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n \u003cdiv class=\"ro-callout\"\u003e\n The Hanna HI98130 Combo is a professional-grade multi-parameter tester that measures pH, EC, TDS, and temperature in a single handheld unit. Designed for water treatment professionals and filtration system operators who need fast, accurate readings without switching between multiple meters.\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n \u003ch2 class=\"ro-title\"\u003eHI98130 Combo Performance\u003c\/h2\u003e\n \u003cdiv class=\"spec-cards\"\u003e\n \u003cdiv class=\"spec-card\"\u003e\n \u003cdiv class=\"sc-label\"\u003epH Range\u003c\/div\u003e\n \u003cdiv class=\"sc-value\"\u003e0.0 to 14.0 pH\u003c\/div\u003e\n \u003cdiv class=\"sc-note\"\u003e±0.1 pH accuracy\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-card\"\u003e\n \u003cdiv class=\"sc-label\"\u003eEC Range\u003c\/div\u003e\n \u003cdiv class=\"sc-value\"\u003e0 to 3999 μS\/cm\u003c\/div\u003e\n \u003cdiv class=\"sc-note\"\u003eGraphite electrode\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-card\"\u003e\n \u003cdiv class=\"sc-label\"\u003eTDS Range\u003c\/div\u003e\n \u003cdiv class=\"sc-value\"\u003e0 to 2000 ppm\u003c\/div\u003e\n \u003cdiv class=\"sc-note\"\u003eAuto conversion factor\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-card\"\u003e\n \u003cdiv class=\"sc-label\"\u003eTemperature\u003c\/div\u003e\n \u003cdiv class=\"sc-value\"\u003e0 to 60°C\u003c\/div\u003e\n \u003cdiv class=\"sc-note\"\u003eStainless steel probe\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-card\"\u003e\n \u003cdiv class=\"sc-label\"\u003eCalibration\u003c\/div\u003e\n \u003cdiv class=\"sc-value\"\u003eAutomatic\u003c\/div\u003e\n \u003cdiv class=\"sc-note\"\u003epH \u0026amp; EC auto-cal\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-card\"\u003e\n \u003cdiv class=\"sc-label\"\u003eDisplay\u003c\/div\u003e\n \u003cdiv class=\"sc-value\"\u003eDual LCD\u003c\/div\u003e\n \u003cdiv class=\"sc-note\"\u003eHold \u0026amp; freeze function\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n \u003ch2 class=\"ro-title\"\u003eHI98130 Design \u0026amp; Construction\u003c\/h2\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003ctr\u003e\n \u003ctd\u003eModel Number\u003c\/td\u003e\n \u003ctd\u003eHI98130\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003eHanna Instruments\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003epH Electrode\u003c\/td\u003e\n \u003ctd\u003eHI 73127 replaceable cartridge\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eEC\/TDS Electrode\u003c\/td\u003e\n \u003ctd\u003eGraphite, contamination-resistant\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTemperature Compensation\u003c\/td\u003e\n \u003ctd\u003eAutomatic (ATC)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePower\u003c\/td\u003e\n \u003ctd\u003e4 x 1.5V batteries (included)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eIncluded Accessories\u003c\/td\u003e\n \u003ctd\u003eHI 73127 pH electrode, batteries, electrode replacement tool\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n \u003ch2 class=\"ro-title\"\u003eWhen to Use the HI98130 Combo\u003c\/h2\u003e\n \u003cp\u003eIdeal for RO system commissioning, water quality audits, aquarium maintenance, hydroponics monitoring, and on-site water testing where multiple parameters need verification. The graphite EC\/TDS electrode resists fouling better than stainless steel in contaminated water. The replaceable pH electrode cartridge extends service life without replacing the entire unit. Use this meter to verify pre-filter effectiveness, track membrane rejection rates, or confirm post-filtration TDS levels in reverse osmosis systems.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"pro-tip\"\u003e\n 💧 \u003cstrong\u003ePro tip:\u003c\/strong\u003e Calibrate the pH probe with fresh buffer solutions every 30 days and rinse both electrodes with distilled water between samples to maintain accuracy across hundreds of measurements.\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470537621666,"sku":"HI98130","price":459.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536735592610-padded.jpg?v=1777265174"},{"product_id":"hanna-hi8633-multi-range-conductivity-meter","title":"Hanna (HI8633) Multi-Range Conductivity Meter","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n\u003ch2\u003eHI8633 Multi-Range Conductivity Meter\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003ePotentiometric probe technology for accurate EC measurement across extreme ranges without constant recalibration\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e0.1 to 199,900 µS\/cm Range\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e4-Ring Potentiometric Probe\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eOne-Point Calibration\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003ePVC Construction\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Hanna HI8633 solves the problem of testing water samples with vastly different conductivity levels—from deionized water to brine—without swapping probes or recalibrating constantly. Its 4-ring potentiometric design delivers reliable readings across five decades of conductivity range using a single calibration point.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eHOW IT WORKS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003ePotentiometric Measurement System\u003c\/h2\u003e\n\u003cdiv class=\"stage-pipeline\"\u003e\n\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e1\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003eCALIBRATION\u003c\/span\u003e\n\u003ch3\u003eSingle-Point Setup\u003c\/h3\u003e\n\u003cp\u003eCalibrate the HI8633 once using the included 12,880 µS\/cm standardizing solution. The potentiometric probe design eliminates the need for frequent recalibration across different sample concentrations, saving time in production and QC environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e2\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003eMEASUREMENT\u003c\/span\u003e\n\u003ch3\u003eWide-Range Detection\u003c\/h3\u003e\n\u003cp\u003eThe 4-ring potentiometric probe measures conductivity from 0.1 to 199,900 µS\/cm without probe changes. Unlike amperometric systems, this technology maintains accuracy whether testing ultrapure water or concentrated brine solutions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e3\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003eREADING\u003c\/span\u003e\n\u003ch3\u003eDirect Display\u003c\/h3\u003e\n\u003cp\u003eThe meter displays conductivity values immediately. The rugged PVC probe construction handles both indoor lab work and outdoor field measurements. For temperature-variable samples, consider the HI8733 model with built-in ATC.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eApplications and Accessories\u003c\/h2\u003e\n\u003cp\u003eThe Hanna HI8633 is designed for production and quality control testing where sample conductivity varies widely—water treatment facilities, reverse osmosis monitoring, hydroponics, brewing, and industrial process control. The HI721313 accessory kit includes a protective carrying case, calibration beaker, screwdriver, and 12,880 µS\/cm standardizing solution. For applications with fluctuating sample temperatures, the HI8733 model adds a built-in temperature sensor with automatic temperature compensation.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470537883810,"sku":"HI8633","price":729.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536735723682-padded.jpg?v=1777265095"},{"product_id":"hanna-hi8733-multi-range-conductivity-meter-atc","title":"Hanna (HI8733) Multi-Range Conductivity Meter;ATC","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI8733 Multi-Range Conductivity Meter delivers professional-grade EC and TDS measurements with automatic temperature compensation for precise water quality monitoring. This handheld tester features a durable graphite electrode that resists contamination and provides accurate readings across multiple conductivity ranges.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eCore Measurements \u0026amp; Features\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eConductivity Range\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eMulti-Range\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eCovers wide EC spectrum\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTemperature Compensation\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eAutomatic\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eATC for accurate readings\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eElectrode Type\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eGraphite\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eContamination resistant\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eDisplay Hold\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eFreeze for easy recording\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eCalibration\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eAutomatic\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eSimple setup process\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003ePower Source\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e4 × 1.5V\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eStandard batteries included\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eHanna HI8733 Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHanna HI8733 (HI98130)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Parameters\u003c\/td\u003e\n\u003ctd\u003eEC, TDS, Temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Probe\u003c\/td\u003e\n\u003ctd\u003eStainless steel sensor for precision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrode System\u003c\/td\u003e\n\u003ctd\u003eReplaceable cartridge design with graphite EC sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Features\u003c\/td\u003e\n\u003ctd\u003eHold function with user prompts, reading freeze capability\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Components\u003c\/td\u003e\n\u003ctd\u003eHI 73127 electrode, batteries, replacement tool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eHanna Instruments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eIdeal Testing Environments\u003c\/h2\u003e\n\u003cp\u003eThe Hanna HI8733 Multi-Range Conductivity Meter is designed for professionals who need fast, reliable water quality measurements without switching between multiple devices. Perfect for testing RO system performance, hydroponic nutrient solutions, aquarium water parameters, and general laboratory analysis. The graphite electrode design makes it particularly suitable for environments where contamination is a concern, while the stainless steel temperature probe ensures rapid thermal equilibration for accurate ATC readings. The replaceable cartridge system means you can maintain measurement accuracy over the long term without replacing the entire unit.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 Keep calibration solution on hand and verify your meter monthly if you're using it for critical applications like RO system monitoring or hydroponic nutrient management. The graphite electrode is more forgiving than standard conductivity probes, but proper storage in electrode storage solution between uses will extend its service life significantly.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470537949346,"sku":"HI8733","price":999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi8733-multi-range-conductivity-meteratc-305448.jpg?v=1759500379"},{"product_id":"hanna-hi-8424-ph-h-h-meter-micro-p-atc-auto-buff","title":"Hanna (HI-8424) pH H-H Meter; Micro-P; ATC; Auto Buff.","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI-8424 pH meter delivers bench-grade pH and ORP measurement in a portable format, featuring automatic temperature compensation from 0 to 70°C and automatic buffer recognition for simplified two-point calibration. This microprocessor-controlled instrument includes a double junction laboratory pH electrode and stainless steel temperature probe for professional water quality testing in the field or lab.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003ePerformance Overview\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003epH Range\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0.00 to 14.00 pH\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eResolution: 0.01 pH\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003emV Range\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e±1999.9 mV\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eDual range for ISE compatibility\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTemperature\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0 to 70°C\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eAutomatic compensation (ATC)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eCalibration\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e2-Point Auto\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003e3 buffer standards recognized\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003epH Accuracy\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e±0.02 pH\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eAt 20°C reference\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eElectrode Type\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eDouble Junction\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eLaboratory grade included\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eHanna HI-8424 Full Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHI-8424 (Hanna Instruments)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Modes\u003c\/td\u003e\n\u003ctd\u003epH, mV (ORP\/Redox with optional electrode), Temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuffer Recognition\u003c\/td\u003e\n\u003ctd\u003eAutomatic (3 programmable buffer standards)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Sensor\u003c\/td\u003e\n\u003ctd\u003eStainless steel probe, included with meter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003emV Resolution\u003c\/td\u003e\n\u003ctd\u003e0.1 mV (low range), 1 mV (high range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Type\u003c\/td\u003e\n\u003ctd\u003eMicroprocessor-controlled LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Applications\u003c\/td\u003e\n\u003ctd\u003eWater quality testing, aquaculture, hydroponics, laboratories, field testing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eProfessional Water Testing\u003c\/h2\u003e\n\u003cp\u003eThe HI-8424 is designed for users who need bench-meter accuracy without the bench. The included double junction pH electrode resists contamination in complex samples, while the stainless steel temperature probe ensures accurate ATC across a wide range of conditions. The dual mV range supports both ORP monitoring (with optional electrode) and ion selective electrode work, making this meter suitable for reverse osmosis system monitoring, aquaculture pH management, hydroponic nutrient solution testing, and general water quality analysis. Automatic buffer recognition streamlines calibration with pH 4.01, 7.01, and 10.01 standards.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 \u003cstrong\u003ePro Tip:\u003c\/strong\u003e The HI-8424's double junction electrode is particularly valuable when testing water with high dissolved solids or contamination potential. Always store the pH probe in proper storage solution between uses to maintain response time and accuracy, and perform two-point calibration with buffers that bracket your expected sample pH range.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470537982114,"sku":"HI8424","price":800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi-8424-ph-h-h-meter-micro-p-atc-auto-buff-779468.jpg?v=1759500379"},{"product_id":"hanna-hi1270-spare-electrodes","title":"Hanna (HI1270) Spare Electrodes","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n \u003cdiv class=\"ro-callout\"\u003e\n The Hanna HI1270 spare electrode is a field-ready pH sensor built with a cloth junction and gel electrolyte for reliable general-purpose measurements. Designed to fit Hanna meters with screw cap connections, this polypropylene-bodied electrode covers the full 0-13 pH range with a 3mm spherical tip.\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n \u003ch2 class=\"ro-title\"\u003eTechnical Details\u003c\/h2\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003ctr\u003e\n \u003ctd\u003eModel\u003c\/td\u003e\n \u003ctd\u003eHanna HI1270\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eReference Type\u003c\/td\u003e\n \u003ctd\u003eSingle, Ag\/AgCl\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eJunction Type\u003c\/td\u003e\n \u003ctd\u003eCloth\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003epH Range\u003c\/td\u003e\n \u003ctd\u003e0 to 13\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTip Shape\u003c\/td\u003e\n \u003ctd\u003eSpheric (3.0 mm diameter)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eElectrolyte\u003c\/td\u003e\n \u003ctd\u003eGel\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eBody Material\u003c\/td\u003e\n \u003ctd\u003ePolypropylene\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMax Pressure\u003c\/td\u003e\n \u003ctd\u003e0.1 bar\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n \u003ch2 class=\"ro-title\"\u003eElectrode Setup\u003c\/h2\u003e\n \u003col class=\"install-steps\"\u003e\n \u003cli\u003eRemove the protective cap from the electrode tip and check that the gel electrolyte is intact and the junction cloth is moist.\u003c\/li\u003e\n \u003cli\u003eAlign the screw cap threads on the electrode with your compatible Hanna pH meter and hand-tighten until secure.\u003c\/li\u003e\n \u003cli\u003eRinse the electrode tip with distilled water before first use and calibrate the meter according to manufacturer instructions.\u003c\/li\u003e\n \u003cli\u003eAfter taking measurements, rinse the electrode and store it in pH storage solution or tap water to maintain junction hydration.\u003c\/li\u003e\n \u003c\/ol\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n \u003ch2 class=\"ro-title\"\u003eFits Hanna Meters\u003c\/h2\u003e\n \u003cp\u003eThis spare electrode is designed for Hanna portable and benchtop pH meters that use screw cap electrode connections. The HI1270 is ideal for field applications, water quality testing, and general-purpose pH measurement where a durable, replaceable sensor is needed. Confirm your meter's electrode connection type before ordering.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"pro-tip\"\u003e\n 🔧 \u003cstrong\u003ePro Tip:\u003c\/strong\u003e The cloth junction can dry out between uses. If your electrode response becomes sluggish, soak the tip in pH 4 buffer solution for 30 minutes to rehydrate the junction before recalibrating.\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470604140706,"sku":"HI1270","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi1270-spare-electrodes-556288.jpg?v=1759500401"},{"product_id":"hanna-hi1286-spare-electrodes","title":"Hanna (HI1286) Spare Electrodes","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n\u003ch2\u003eHI1286 Spare pH Electrode\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003eDouble junction replacement electrode with PTFE junction for water treatment, agriculture, and general purpose pH measurement\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e2m Coaxial Cable\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eBNC Connection\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e0-13 pH Range\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e3 Bar Max Pressure\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe HI1286 is a direct replacement pH electrode engineered for HI 981401N and HI 981402 meters. Built with a Teflon junction and double Ag\/AgCl reference, this electrode delivers reliable readings in water treatment and agricultural applications where chemical resistance matters.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL SPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eHI1286 Electrode Design\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eReference Type\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eDouble, Ag\/AgCl\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eJunction Material\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003ePTFE (Teflon)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eElectrolyte\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003ePolymer gel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003epH Range\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e0 to 13\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eMax Pressure\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eTip Shape\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eSpherical (7.5mm diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eBody Material\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003ePEI (Polyetherimide)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eCable\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eCoaxial, 2m (6.6')\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eConnection\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eBNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-key\"\u003eTemperature Sensor\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eNo (external ATC required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eCompatible Meters\u003c\/h3\u003e\n\u003cp\u003eThe HI1286 electrode is designed specifically for Hanna HI 981401N and HI 981402 portable pH meters. The BNC connector ensures secure attachment, while the 2-meter cable provides flexibility for field measurements in water treatment facilities, agricultural operations, and general laboratory work. The PTFE junction resists clogging in demanding sample conditions where standard ceramic junctions may fail.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470604435618,"sku":"HI1286","price":140.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi1286-spare-electrodes-450045.jpg?v=1759500403"},{"product_id":"hanna-hi1230b-laboratory-combination-ph-electrode-with-ceramic-junction-for-field-applications","title":"Hanna (HI1230B) Laboratory combination pH electrode with ceramic junction for field applications.","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments – Laboratory-Grade pH Measurement\u003c\/div\u003e\n\u003ch2\u003e\n\u003cem\u003eHI1230B\u003c\/em\u003e Laboratory Combination pH Electrode\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eCeramic junction design for reliable field and lab performance across demanding applications\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Double Ag\/AgCl reference\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 0–13 pH range\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Gel electrolyte\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ PEI body construction\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Hanna HI1230B is a laboratory-grade combination pH electrode built for field use with a \u003cstrong\u003eceramic single junction\u003c\/strong\u003e and \u003cstrong\u003edouble Ag\/AgCl reference\u003c\/strong\u003e system. Its \u003cstrong\u003e7.5mm spherical tip\u003c\/strong\u003e and gel electrolyte design deliver consistent readings in water treatment, environmental sampling, and quality control applications where durability and accuracy matter.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eKEY FEATURES\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eBuilt for Field Reliability\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔬\u003c\/span\u003e\n\u003ch3\u003eDouble Reference Design\u003c\/h3\u003e\n\u003cp\u003eAg\/AgCl double reference system provides stable, drift-resistant readings in variable sample conditions\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e💧\u003c\/span\u003e\n\u003ch3\u003eCeramic Junction\u003c\/h3\u003e\n\u003cp\u003eSingle ceramic junction resists clogging and contamination in challenging field samples\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🌡️\u003c\/span\u003e\n\u003ch3\u003eWide Operating Range\u003c\/h3\u003e\n\u003cp\u003eMeasures 0 to 13 pH across temperatures from 0 to 80°C with up to 2 bar pressure tolerance\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔧\u003c\/span\u003e\n\u003ch3\u003eDurable PEI Body\u003c\/h3\u003e\n\u003cp\u003ePolyEther-Imide construction withstands field handling and chemical exposure better than glass alternatives\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e⚡\u003c\/span\u003e\n\u003ch3\u003eGel Electrolyte\u003c\/h3\u003e\n\u003cp\u003eMaintenance-free gel electrolyte eliminates refilling and reduces drift over extended use\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔌\u003c\/span\u003e\n\u003ch3\u003eStandard BNC Connection\u003c\/h3\u003e\n\u003cp\u003e1-meter coaxial cable with BNC connector fits most Hanna and third-party pH meters\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eDesigned for Hanna pH Meters and Field Work\u003c\/h3\u003e\n\u003cp\u003eThe HI1230B electrode connects to Hanna portable and benchtop pH meters via standard BNC coupling. Ideal for environmental water testing, aquaculture monitoring, industrial process control, wastewater analysis, and drinking water quality verification where a rugged, field-ready electrode is required. The 7.5mm spherical tip works in sample volumes from small vials to large containers, and the ceramic junction handles turbid, low-conductivity, and protein-containing samples that foul standard junctions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eHanna Instruments has been a trusted name in analytical instrumentation since 1978, delivering precision measurement tools to labs and field teams worldwide.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470604632226,"sku":"HI1230B","price":260.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi1230b-laboratory-combination-ph-electrode-with-ceramic-junction-for-field-applications-428667.jpg?v=1759500405"},{"product_id":"hanna-hi1131b-laboratory-combination-ph-electrode-with-ceramic-junction-for-beer-laboratory-general-purpose","title":"Hanna (HI1131B) Laboratory combination pH electrode with ceramic junction for beer, laboratory general purpose.","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments Laboratory Equipment\u003c\/div\u003e\n\u003ch2\u003eHanna \u003cem\u003eHI1131B\u003c\/em\u003e Laboratory pH Electrode\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eCombination pH electrode with ceramic junction engineered for beer testing and general laboratory applications\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"badge-cert\"\u003eLaboratory Grade\u003c\/span\u003e\n\u003cspan class=\"badge-cert\"\u003eBNC Connection\u003c\/span\u003e\n\u003cspan class=\"badge-cert\"\u003eCeramic Junction\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003ePurpose-built electrode design for reliable pH measurement in beer and lab environments\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔬\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eCeramic Single Junction\u003c\/h3\u003e\n\u003cp\u003e15-20 µL\/h flow rate prevents clogging in high-protein and turbid samples like beer wort and finished beer\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🎯\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eSilver\/Silver Chloride Reference\u003c\/h3\u003e\n\u003cp\u003eSingle Ag\/AgCl reference system with 3.5M KCl + AgCl electrolyte delivers stable readings across pH 0-13 range\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e💎\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eSpherical Glass Tip\u003c\/h3\u003e\n\u003cp\u003e9.5mm diameter spherical tip shape provides durability and consistent contact with sample surfaces\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔌\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eStandard BNC Connection\u003c\/h3\u003e\n\u003cp\u003e1 meter coaxial cable with BNC connector fits Hanna and most laboratory pH meters\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL SPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eHI1131B electrode specifications\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eModel Number\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eHI1131B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eReference Type\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eSingle Ag\/AgCl\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eJunction Type\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eCeramic, single\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eFlow Rate\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e15-20 µL\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eElectrolyte\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e3.5M KCl + AgCl\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003epH Range\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e0 to 13\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e20 to 40°C (68 to 104°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eTip Shape\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eSpherical, 9.5mm diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eBody Material\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eGlass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eCable Length\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e1 meter (3.3 ft) coaxial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eConnection\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eBNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eMax Pressure\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e0.1 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eTemperature Sensor\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWorks with Hanna pH meters and most laboratory instruments\u003c\/h3\u003e\n\u003cp\u003eThe HI1131B electrode connects to any pH meter with a standard BNC input, including Hanna portable and benchtop meters. Designed specifically for brewery quality control labs and general laboratory use where beer, wine, or other viscous and turbid samples require testing. The ceramic junction resists fouling better than glass junctions in protein-rich liquids.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🍺\u003c\/div\u003e\n\u003ch4\u003eBeer Optimized\u003c\/h4\u003e\n\u003cp\u003eJunction flow rate prevents clogging in wort and finished beer\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e⚗️\u003c\/div\u003e\n\u003ch4\u003eLab Versatile\u003c\/h4\u003e\n\u003cp\u003eGeneral purpose design handles most aqueous samples\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🔧\u003c\/div\u003e\n\u003ch4\u003eUniversal Fit\u003c\/h4\u003e\n\u003cp\u003eBNC connection works with most benchtop pH meters\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🛡️\u003c\/div\u003e\n\u003ch4\u003eDurable Glass\u003c\/h4\u003e\n\u003cp\u003eSpherical tip resists breakage during routine handling\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470604697762,"sku":"HI1131B","price":370.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi1131b-laboratory-combination-ph-electrode-with-ceramic-junction-for-beer-laboratory-general-purpose-232265.jpg?v=1759500406"},{"product_id":"hanna-hi1001-ph-electrodes-for-continuous-flow-thru-monitoring","title":"Hanna (HI1001) pH Electrodes for Continuous Flow-thru Monitoring","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI1001 pH electrode is engineered for continuous flow-through monitoring in demanding industrial environments where reliability and accuracy matter. With double-junction PTFE technology, a PVDF body rated to 6 bar, and a ½\" NPT thread for direct in-line installation, this electrode handles aggressive chemicals, heavy metals, and organic compounds without clogging or frequent maintenance.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eHanna HI1001 Technical Details\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHanna HI1001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJunction Type\u003c\/td\u003e\n\u003ctd\u003eDouble-junction PTFE (non-clogging annular design)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Material\u003c\/td\u003e\n\u003ctd\u003ePVDF with PEI protective sleeve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection\u003c\/td\u003e\n\u003ctd\u003e½\" NPT external thread, BNC connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003e3 meters (9.8 feet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-5 to 80°C (23 to 176°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Pressure\u003c\/td\u003e\n\u003ctd\u003e6 bar (87 psi)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrolyte\u003c\/td\u003e\n\u003ctd\u003ePolymer (no refilling required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eInstalling the HI1001 Electrode\u003c\/h2\u003e\n\u003col class=\"install-steps\"\u003e\n\u003cli\u003eThread the electrode into your flow-through monitoring system using the ½\" NPT external fitting, ensuring proper seal with thread tape or paste rated for your process fluid.\u003c\/li\u003e\n\u003cli\u003eConnect the BNC connector to your compatible Hanna pH\/ORP meter or controller, confirming the cable routing avoids pinch points or sharp edges.\u003c\/li\u003e\n\u003cli\u003eFlush the system to remove air pockets and allow the electrode to equilibrate for 10-15 minutes before calibration.\u003c\/li\u003e\n\u003cli\u003eCalibrate using standard buffer solutions appropriate to your expected measurement range, following your instrument's procedure.\u003c\/li\u003e\n\u003cli\u003eMonitor electrode response time and junction condition periodically; clean the PTFE junction with mild detergent or process-appropriate solvent if response slows.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWorks With\u003c\/h2\u003e\n\u003cp\u003eThe HI1001 pH electrode connects to any pH or ORP meter with a standard BNC input, including all Hanna HI1000 and HI2000 series instruments. The ½\" NPT thread fits standard industrial piping and flow-through cells used in water treatment, chemical processing, aquaculture, and food and beverage applications. The double-junction polymer electrolyte design makes it especially suited for samples containing organic compounds, proteins, heavy metals, sulfides, and other contaminants that quickly foul standard single-junction electrodes.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n🔧 \u003cstrong\u003ePro tip:\u003c\/strong\u003e In high-fouling applications, install the electrode in a vertical orientation with flow from bottom to top. This keeps the PTFE junction swept clean and prevents particulate settlement that can slow response time even with non-clogging designs.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470604730530,"sku":"HI1001","price":375.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi1001-ph-electrodes-for-continuous-flow-thru-monitoring-119015.jpg?v=1759500406"},{"product_id":"hanna-hi2001-orp-electrodes-for-continuous-flow-thru-monitoring","title":"Hanna (HI2001) ORP Electrodes for Continuous Flow-thru Monitoring","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n \u003cdiv class=\"ro-hero\"\u003e\n \u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n \u003ch2\u003eHI2001 ORP Electrode for Continuous Flow-thru Monitoring\u003c\/h2\u003e\n \u003cdiv class=\"ro-tagline\"\u003ePlatinum sensor electrode with double-junction PTFE technology for reliable oxidation-reduction potential measurement in industrial process streams\u003c\/div\u003e\n \u003cdiv class=\"ro-badges\"\u003e\n \u003cspan class=\"ro-badge\"\u003eBNC Connector\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003e3m Cable\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003e½\" NPT Thread\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003e-5 to 80°C\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-callout\"\u003e\n \u003cp\u003eThe Hanna HI2001 is an industrial-grade ORP electrode designed for in-line installation in continuous flow systems where contamination from organics, proteins, or heavy metals would compromise standard reference designs. The platinum sensor and double-junction polymer reference eliminate the need for electrolyte refilling while the PTFE junction resists clogging in challenging process water applications.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n \u003ch3 class=\"ro-title\"\u003eTechnical Details\u003c\/h3\u003e\n \u003cdiv class=\"specs-table\"\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cspan class=\"spec-label\"\u003eModel Number\u003c\/span\u003e\n \u003cspan class=\"spec-value\"\u003eHI2001\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cspan class=\"spec-label\"\u003eSensor Type\u003c\/span\u003e\n \u003cspan class=\"spec-value\"\u003ePlatinum (Pt)\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cspan class=\"spec-label\"\u003eJunction\u003c\/span\u003e\n \u003cspan class=\"spec-value\"\u003eDouble, PTFE (annular)\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cspan class=\"spec-label\"\u003eReference Electrolyte\u003c\/span\u003e\n \u003cspan class=\"spec-value\"\u003ePolymer (maintenance-free)\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cspan class=\"spec-label\"\u003eBody Material\u003c\/span\u003e\n \u003cspan class=\"spec-value\"\u003ePVDF with PEI protective sleeve\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cspan class=\"spec-label\"\u003eConnection Thread\u003c\/span\u003e\n \u003cspan class=\"spec-value\"\u003e½\" NPT external (in-line installation)\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cspan class=\"spec-label\"\u003eConnector Type\u003c\/span\u003e\n \u003cspan class=\"spec-value\"\u003eBNC\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cspan class=\"spec-label\"\u003eCable Length\u003c\/span\u003e\n \u003cspan class=\"spec-value\"\u003e3 meters (9.8 feet)\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cspan class=\"spec-label\"\u003eTemperature Range\u003c\/span\u003e\n \u003cspan class=\"spec-value\"\u003e-5 to 80°C (23 to 176°F)\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"spec-row\"\u003e\n \u003cspan class=\"spec-label\"\u003eMax Pressure\u003c\/span\u003e\n \u003cspan class=\"spec-value\"\u003e6 bar (87 psi)\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n \u003ch3 class=\"ro-title\"\u003eMeter Connection and Installation\u003c\/h3\u003e\n \u003cp\u003eThe BNC connector on the HI2001 makes it compatible with any Hanna pH\/ORP meter or controller that accepts standard BNC electrode connections, including the HI 1000 and HI 2000 series instruments. The ½\" NPT external thread allows direct installation into process piping, flow cells, or tanks equipped with matching female NPT fittings. The double-junction polymer reference is suited for samples containing organic compounds, proteins, heavy metals, or other contaminants that would poison conventional liquid electrolyte references. The PVDF body and PEI sleeve provide chemical resistance and mechanical durability in industrial environments.\u003c\/p\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470604763298,"sku":"HI2001","price":406.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi2001-orp-electrodes-for-continuous-flow-thru-monitoring-513265.jpg?v=1762459791"},{"product_id":"hanna-hi7071-electrolyte-solution-3-5m-kcl-agcl-4-x-30-ml-bottles","title":"Hanna (HI7071) Electrolyte Solution, 3.5M KCl + AgCl 4 x 30 mL bottles","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n\u003ch2\u003eHanna \u003cem\u003eHI7071 Electrolyte Solution\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003e3.5M KCl + AgCl refill solution for maintaining optimal electrode performance in refillable pH and ORP probes\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e4 x 30 mL Bottles\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eFDA Compliant\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e3.5M Potassium Chloride\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003ePrecision measurement depends on proper electrode maintenance\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔬\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eMaintains Electrode Junction\u003c\/h3\u003e\n\u003cp\u003eThe 3.5M potassium chloride concentration with silver chloride ensures consistent ion flow through the reference junction, preventing measurement drift and electrode polarization.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e⚡\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003ePrevents Reference Drift\u003c\/h3\u003e\n\u003cp\u003eSilver chloride stabilizes the reference potential, eliminating voltage shifts that compromise accuracy in pH and ORP measurements over time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e💧\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eExtends Electrode Life\u003c\/h3\u003e\n\u003cp\u003eRegular refilling keeps the internal element hydrated and the liquid junction flowing properly, preventing premature electrode failure from dehydration or contamination.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📦\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eFDA Compliant Packaging\u003c\/h3\u003e\n\u003cp\u003eBottles meet FDA requirements for use in food and beverage testing environments where regulatory compliance is mandatory.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWorks with Hanna refillable electrodes\u003c\/h3\u003e\n\u003cp\u003eThe HI7071 electrolyte solution is formulated for all Hanna Instruments refillable pH and ORP electrodes that specify 3.5M KCl + AgCl fill solution. Check your electrode's reference chamber before refilling. Not for use with gel-filled or double-junction electrodes that require different electrolyte concentrations. Each 30 mL bottle provides multiple refills depending on electrode chamber volume.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eMAINTENANCE\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWhen to refill your electrodes\u003c\/h3\u003e\n\u003cdiv class=\"filter-schedule\"\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eBefore Each Use\u003c\/div\u003e\n\u003ch4\u003eVisual Inspection\u003c\/h4\u003e\n\u003cp\u003eCheck electrolyte level in refillable chamber. Should be at or above the fill line. Low electrolyte causes slow response and inaccurate readings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eWeekly\u003c\/div\u003e\n\u003ch4\u003eHeavy Use Environments\u003c\/h4\u003e\n\u003cp\u003eRefill weekly if electrode is used daily or in high-temperature applications where evaporation accelerates. Top off to fill line with HI7071 solution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eMonthly\u003c\/div\u003e\n\u003ch4\u003eStandard Laboratory Use\u003c\/h4\u003e\n\u003cp\u003eCheck and refill monthly for typical bench testing. Replace all solution if contamination or crystallization is visible in chamber.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eAfter Storage\u003c\/div\u003e\n\u003ch4\u003eReactivation Protocol\u003c\/h4\u003e\n\u003cp\u003eAlways refill after extended storage. Old electrolyte loses ionic strength and silver chloride precipitates, compromising reference stability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🎯\u003c\/div\u003e\n\u003ch4\u003eMeasurement Accuracy\u003c\/h4\u003e\n\u003cp\u003eProper electrolyte maintenance is non-negotiable for reliable pH and ORP data\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💰\u003c\/div\u003e\n\u003ch4\u003eCost Effective\u003c\/h4\u003e\n\u003cp\u003eFour 30 mL bottles provide months of refills at a fraction of electrode replacement cost\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e✅\u003c\/div\u003e\n\u003ch4\u003eQuality Assurance\u003c\/h4\u003e\n\u003cp\u003eFDA compliant formulation meets requirements for food, beverage, and pharmaceutical testing\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470604796066,"sku":"HI7071","price":140.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi7071-electrolyte-solution-35m-kcl-agcl-4-x-30-ml-bottles-862838.jpg?v=1759500407"},{"product_id":"hanna-hi7041s-electrolyte-solution-for-polargraphic-d-o-probes","title":"Hanna (HI7041S) Electrolyte Solution for Polargraphic D.O. Probes","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments Dissolved Oxygen Accessories\u003c\/div\u003e\n\u003ch2\u003e\n\u003cem\u003eHI7041S\u003c\/em\u003e Electrolyte Solution for Polarographic D.O. Probes\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eReplacement electrolyte solution engineered specifically for polarographic dissolved oxygen membrane probes\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ OEM Hanna formulation\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Maintains probe accuracy\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Easy refill procedure\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe HI7041S electrolyte solution is formulated to restore performance in polarographic dissolved oxygen probes. Regular replacement of the internal electrolyte ensures \u003cstrong\u003econsistent sensor response\u003c\/strong\u003e and \u003cstrong\u003eaccurate DO measurements\u003c\/strong\u003e in water quality testing applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eKEY FEATURES\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWhat Makes HI7041S Essential for D.O. Probe Maintenance\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔬\u003c\/span\u003e\n\u003ch3\u003eOEM Specification\u003c\/h3\u003e\n\u003cp\u003eHanna Instruments original formulation ensures chemical compatibility with polarographic sensor materials and membranes\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e⚡\u003c\/span\u003e\n\u003ch3\u003eElectrode Performance\u003c\/h3\u003e\n\u003cp\u003eMaintains optimal ion concentration between cathode and anode for reliable electrochemical oxygen reduction\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🎯\u003c\/span\u003e\n\u003ch3\u003eMeasurement Accuracy\u003c\/h3\u003e\n\u003cp\u003eFresh electrolyte restores probe sensitivity and extends membrane life in dissolved oxygen monitoring\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔧\u003c\/span\u003e\n\u003ch3\u003eSimple Refill\u003c\/h3\u003e\n\u003cp\u003eDesigned for field replacement during routine probe maintenance and membrane replacement procedures\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eCompatible Probes and Systems\u003c\/h3\u003e\n\u003cp\u003eThe HI7041S electrolyte solution is designed for use with Hanna polarographic dissolved oxygen probes across portable and benchtop DO meters. Essential for probe refurbishment during membrane replacement on models requiring internal electrolyte. Widely used in aquaculture monitoring, wastewater treatment analysis, environmental water quality testing, and laboratory dissolved oxygen measurement applications where polarographic sensor technology is deployed.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eHanna Instruments has manufactured precision water quality instrumentation and consumables for over 40 years, trusted by laboratories and field professionals worldwide.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470605090978,"sku":"HI7041S","price":42.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi7041s-electrolyte-solution-for-polargraphic-do-probes-422884.jpg?v=1759500409"},{"product_id":"hanna-hi38054-ozone-range-0-0-2-3-mg-l","title":"Hanna (HI38054) Ozone - Range (0.0-2.3 mg-L)","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n\u003ch2\u003e\u003cem\u003eHI38054 Ozone Test Kit\u003c\/em\u003e\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003ePrecision ozone measurement for water disinfection systems, swimming pools, and reverse osmosis applications\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e0.0-2.3 mg\/L Range\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eOxidation Monitoring\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eDisinfection Control\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eMonitor ozone levels where oxidation and sterilization depend on precise dosing\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🧪\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eDisinfection Control\u003c\/h3\u003e\n\u003cp\u003eOzone oxidizes organic matter and eliminates color and odor impurities in drinking water and bottled water applications faster than traditional methods\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e⚡\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eOxidizing Efficiency\u003c\/h3\u003e\n\u003cp\u003eHigh oxidation potential reduces sterilization time in swimming pools and water treatment facilities while maintaining germicidal effectiveness\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔬\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eSafety Verification\u003c\/h3\u003e\n\u003cp\u003eMonitor ozone concentration to ensure safe levels post-treatment, critical for de-ozonization processes before human contact or consumption\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e💧\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eRO Integration\u003c\/h3\u003e\n\u003cp\u003eTrack ozone levels in reverse osmosis pre-treatment stages where oxidation prepares feedwater and extends membrane life\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eApplication environments\u003c\/h3\u003e\n\u003cp\u003eThe Hanna HI38054 test kit measures ozone in drinking water treatment plants, bottled water facilities, swimming pool disinfection systems, and reverse osmosis pre-treatment applications where ozone concentrations between 0.0 and 2.3 mg\/L require monitoring. Designed for facilities employing ozone as an oxidizing agent or germicide, and for post-treatment verification during de-ozonization processes.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🎯\u003c\/div\u003e\n\u003ch4\u003eNarrow Range Precision\u003c\/h4\u003e\n\u003cp\u003e0.0 to 2.3 mg\/L range covers typical disinfection and oxidation concentrations\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e⏱️\u003c\/div\u003e\n\u003ch4\u003eRapid Assessment\u003c\/h4\u003e\n\u003cp\u003eQuick testing supports real-time process control in fast-acting ozone systems\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🛡️\u003c\/div\u003e\n\u003ch4\u003eHealth Compliance\u003c\/h4\u003e\n\u003cp\u003eVerify safe ozone levels before water reaches consumers or swimmers\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e📊\u003c\/div\u003e\n\u003ch4\u003eProcess Optimization\u003c\/h4\u003e\n\u003cp\u003eBalance oxidation efficiency with safety requirements in treatment protocols\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470605123746,"sku":"HI38054","price":185.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536748798114-padded.jpg?v=1777264846"},{"product_id":"hanna-hi3831f-chlorine-range-0-0-2-5-mg-l","title":"Hanna (HI3831F) Chlorine - Range (0.0-2.5 mg-L)","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Water Quality Testing\u003c\/div\u003e\n\u003ch2\u003e\u003cem\u003eHanna HI3831F Chlorine Test Reagent\u003c\/em\u003e\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eLaboratory-grade reagent for precise free and total chlorine measurement in water systems, covering 0.0 to 2.5 mg\/L range\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003eChlorine Analysis\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e0.0-2.5 mg\/L\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eHanna Instruments\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003ePrecision chlorine monitoring for safe water disinfection\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🎯\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eAccurate Free Chlorine Detection\u003c\/h3\u003e\n\u003cp\u003eMeasures the active disinfecting chlorine that remains available after binding with bacteria, ensuring proper sanitization levels in drinking water, pools, and food processing applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔬\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eTotal Chlorine Capability\u003c\/h3\u003e\n\u003cp\u003eDistinguishes between free chlorine and combined chlorine compounds, providing complete analysis of your water's disinfecting potential and chemical balance\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📊\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eOptimized Range\u003c\/h3\u003e\n\u003cp\u003eThe 0.0-2.5 mg\/L measurement range covers typical municipal water, wastewater treatment, pool sanitization, and industrial disinfection monitoring requirements\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e⚗️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eLab-Grade Reagent\u003c\/h3\u003e\n\u003cp\u003eFormulated to Hanna Instruments specifications for consistent, reliable results across temperature and pH variations common in real-world water testing scenarios\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWorks with Hanna chlorine photometers and colorimeters\u003c\/h3\u003e\n\u003cp\u003eThe HI3831F reagent is designed for use with Hanna Instruments chlorine meters including portable photometers and benchtop colorimeters. Verify compatibility with your specific meter model before ordering. Essential for water treatment facilities, pool maintenance operations, food and beverage processing plants, and environmental testing laboratories monitoring chlorine disinfection efficacy.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💧\u003c\/div\u003e\n\u003ch4\u003eCritical Disinfection Control\u003c\/h4\u003e\n\u003cp\u003eProper chlorine levels eliminate pathogens while preventing taste, odor, and corrosion issues from over-chlorination\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e✓\u003c\/div\u003e\n\u003ch4\u003eRegulatory Compliance\u003c\/h4\u003e\n\u003cp\u003eMeets testing requirements for municipal water systems, public pools, and food processing facilities\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e📦\u003c\/div\u003e\n\u003ch4\u003eReady to Use\u003c\/h4\u003e\n\u003cp\u003ePre-measured reagent simplifies testing procedures and reduces measurement errors in field and lab environments\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470666268834,"sku":"HI3831F","price":56.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536754204834-padded.jpg?v=1777264868"},{"product_id":"hanna-hi3847-copper-chemical-test-kit-range-0-0-2-5-mg-l","title":"Hanna (HI3847) Copper Chemical Test Kit - Range 0.0-2.5 mg-L","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n \u003cdiv class=\"ro-hero\"\u003e\n \u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n \u003ch2\u003eHI3847 Copper Chemical Test Kit\u003c\/h2\u003e\n \u003cdiv class=\"ro-tagline\"\u003eColorimetric copper testing for potable water tanks, plumbing systems, and aquatic environments\u003c\/div\u003e\n \u003cdiv class=\"ro-badges\"\u003e\n \u003cspan class=\"ro-badge\"\u003e0.0-2.5 mg\/L Range\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003e100 Tests\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003eBicinchoninate Method\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-callout\"\u003e\n The Hanna HI3847 delivers precise colorimetric copper measurement for monitoring bacteriological growth in potable water tanks and assessing pipe corrosion. This chemical test kit uses the bicinchoninate method to detect copper concentrations from 0.0 to 2.5 mg\/L across 100 individual tests.\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eHOW IT WORKS\u003c\/div\u003e\n \u003cdiv class=\"ro-title\"\u003eColorimetric Testing Process\u003c\/div\u003e\n \u003cdiv class=\"stage-pipeline\"\u003e\n \u003cdiv class=\"stage-row\"\u003e\n \u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n \u003cdiv class=\"stage-num\"\u003e1\u003c\/div\u003e\n \u003cdiv class=\"stage-body\"\u003e\n \u003cspan class=\"stage-tag\"\u003eSAMPLE\u003c\/span\u003e\n \u003ch3\u003eWater Collection\u003c\/h3\u003e\n \u003cp\u003eCollect water sample in provided cuvette to the 10 mL mark for testing\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"stage-row\"\u003e\n \u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n \u003cdiv class=\"stage-num\"\u003e2\u003c\/div\u003e\n \u003cdiv class=\"stage-body\"\u003e\n \u003cspan class=\"stage-tag\"\u003eREAGENT\u003c\/span\u003e\n \u003ch3\u003eChemical Addition\u003c\/h3\u003e\n \u003cp\u003eAdd HI3847-0 reagent powder to sample and mix thoroughly until dissolved\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"stage-row\"\u003e\n \u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n \u003cdiv class=\"stage-num\"\u003e3\u003c\/div\u003e\n \u003cdiv class=\"stage-body\"\u003e\n \u003cspan class=\"stage-tag\"\u003eREACTION\u003c\/span\u003e\n \u003ch3\u003eColor Development\u003c\/h3\u003e\n \u003cp\u003eWait 5 minutes for bicinchoninate reaction to develop violet color proportional to copper concentration\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"stage-row\"\u003e\n \u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n \u003cdiv class=\"stage-num\"\u003e4\u003c\/div\u003e\n \u003cdiv class=\"stage-body\"\u003e\n \u003cspan class=\"stage-tag\"\u003eMEASURE\u003c\/span\u003e\n \u003ch3\u003eVisual Comparison\u003c\/h3\u003e\n \u003cp\u003eCompare developed color against reference standards to determine copper level in mg\/L\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n \u003cdiv class=\"ro-title\"\u003eApplications and Use Cases\u003c\/div\u003e\n \u003cp\u003eThe HI3847 copper test kit is designed for potable water tank monitoring, plumbing corrosion assessment, aquarium and aquaculture systems, and industrial water quality control. Copper monitoring is critical for controlling bacteriological growth in water storage tanks and identifying corrosion from copper piping that can contribute elevated copper levels to drinking water. Each kit includes 100 tests with reagents, cuvettes, and color comparison cube for field or laboratory use.\u003c\/p\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470667645090,"sku":"HI3847","price":228.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536754598050-padded.jpg?v=1777264880"},{"product_id":"hanna-hi93701-03-reagent-kit-300-tests-chlorine-free","title":"Hanna (HI93701-03) Reagent Kit - 300 Tests; Chlorine Free","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n \u003cdiv class=\"ro-hero\"\u003e\n \u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n \u003ch2\u003eHI93701-03 Free Chlorine Reagent Kit\u003c\/h2\u003e\n \u003cdiv class=\"ro-tagline\"\u003e300 pre-measured DPD tablets for accurate colorimetric chlorine testing from 0.00 to 5.00 mg\/L\u003c\/div\u003e\n \u003cdiv class=\"ro-badges\"\u003e\n \u003cspan class=\"ro-badge\"\u003e300 Tests\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003eDPD Method\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003ePre-Measured Tablets\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003e0.00-5.00 mg\/L Range\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-callout\"\u003e\n \u003cp\u003eThe HI93701-03 reagent kit delivers 300 high-quality, pre-measured tablets designed for fast and accurate free chlorine measurements using the DPD colorimetric method. Each tablet reacts with chlorine in your sample to produce a pink tint proportional to chlorine concentration, eliminating the guesswork of liquid reagent dosing and ensuring consistent results across all 300 tests.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eHOW IT WORKS\u003c\/div\u003e\n \u003ch2 class=\"ro-title\"\u003eDPD Colorimetric Analysis\u003c\/h2\u003e\n \u003cdiv class=\"stage-pipeline\"\u003e\n \u003cdiv class=\"stage-row\"\u003e\n \u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n \u003cdiv class=\"stage-num\"\u003e1\u003c\/div\u003e\n \u003cdiv class=\"stage-body\"\u003e\n \u003cspan class=\"stage-tag\"\u003eSAMPLE\u003c\/span\u003e\n \u003ch3\u003eCollect Water Sample\u003c\/h3\u003e\n \u003cp\u003eFill your test vial or cuvette with the water sample you need to analyze for free chlorine content. The HI93701-03 is calibrated for samples expected to contain between 0.00 and 5.00 mg\/L free chlorine.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"stage-row\"\u003e\n \u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n \u003cdiv class=\"stage-num\"\u003e2\u003c\/div\u003e\n \u003cdiv class=\"stage-body\"\u003e\n \u003cspan class=\"stage-tag\"\u003eREACTION\u003c\/span\u003e\n \u003ch3\u003eAdd DPD Reagent Tablet\u003c\/h3\u003e\n \u003cp\u003eDrop one pre-measured HI93701-03 tablet into your sample. The DPD reagent reacts with free chlorine to produce a pink tint, with color intensity directly proportional to chlorine concentration.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"stage-row\"\u003e\n \u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n \u003cdiv class=\"stage-num\"\u003e3\u003c\/div\u003e\n \u003cdiv class=\"stage-body\"\u003e\n \u003cspan class=\"stage-tag\"\u003eMEASUREMENT\u003c\/span\u003e\n \u003ch3\u003eRead Results\u003c\/h3\u003e\n \u003cp\u003eInsert the sample into your compatible Hanna colorimeter or photometer. The meter reads the color intensity and displays the free chlorine concentration in mg\/L (ppm) on the digital screen.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n \u003ch2 class=\"ro-title\"\u003eWorks With Hanna Colorimeters and Photometers\u003c\/h2\u003e\n \u003cp\u003eThe HI93701-03 reagent tablets are designed for use with Hanna Instruments benchtop and portable colorimeters that support free chlorine testing via the DPD method. Check your meter's documentation to confirm compatibility with the HI93701 series reagents. Each kit provides 300 tests, making it ideal for laboratories, water treatment facilities, pool service professionals, and quality control applications requiring frequent chlorine monitoring.\u003c\/p\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470670921890,"sku":"HI93701-03","price":306.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536755679394-padded.jpg?v=1777265106"},{"product_id":"hanna-hi93711-01-chlorine-total-dpd-method-100-tests","title":"Hanna (HI93711-01) Chlorine, Total, DPD Method (100 Tests)","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n\u003ch2\u003eHI93711-01 Total Chlorine Reagent Kit\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003eDPD method reagents for precise total chlorine measurement in drinking water, pools, and industrial applications\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e100 Tests\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e0.00-3.50 mg\/L Range\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eDPD Method\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eLab Grade\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI93711-01 reagent kit uses the EPA-approved DPD (N,N-diethyl-p-phenylenediamine) method to accurately measure total chlorine in water samples from 0.00 to 3.50 mg\/L. Each kit includes 100 pre-measured powder packets designed for use with compatible Hanna colorimeters and photometers.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL SPECIFICATIONS\u003c\/div\u003e\n\u003cdiv class=\"ro-title\"\u003eWhat's Included\u003c\/div\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eModel Number\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eHI93711-01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eMethod\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eDPD (N,N-diethyl-p-phenylenediamine)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e0.00 to 3.50 mg\/L (ppm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eExtended Range\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eUp to 5.00 mg\/L on select meters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eNumber of Tests\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003e100 reagent packets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eParameter\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eTotal Chlorine (free + combined)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spec-label\"\u003eApplication\u003c\/td\u003e\n\u003ctd class=\"spec-value\"\u003eMunicipal water, pools, aquaculture, industrial process\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003cdiv class=\"ro-title\"\u003eWorks With Hanna Photometers\u003c\/div\u003e\n\u003cp\u003eThe HI93711-01 reagent kit is designed for use with Hanna photometers and colorimeters that support the DPD total chlorine method, including the HI96711, HI97711, and similar models. Each reagent packet is pre-measured for accurate dosing without the need for volumetric equipment. Total chlorine measurement includes both free chlorine and chloramines, making this kit ideal for municipalities that use chloramine disinfection, as well as pool operators monitoring combined chlorine levels.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470671184034,"sku":"HI93711-01","price":113.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi93711-01-chlorine-total-dpd-method-100-tests-200145.jpg?v=1759500434"},{"product_id":"hanna-hi93711-03-chlorine-total-dpd-method-300-tests","title":"Hanna (HI93711-03) Chlorine, Total, DPD Method (300 Tests)","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI93711-03 reagent kit delivers 300 precise chlorine measurements using the DPD (N,N-diethyl-p-phenylenediamine) method, the industry standard for total chlorine analysis in drinking water, pools, and industrial applications. Designed for use with compatible Hanna photometers, this kit provides accurate readings from 0.00 to 3.50 mg\/L with select meters extending to 5.00 mg\/L.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eTechnical Details\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHI93711-03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eHanna Instruments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParameter Tested\u003c\/td\u003e\n\u003ctd\u003eTotal Chlorine (free + combined)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTest Method\u003c\/td\u003e\n\u003ctd\u003eDPD (N,N-diethyl-p-phenylenediamine)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e0.00 to 3.50 mg\/L (up to 5.00 mg\/L on select meters)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Tests\u003c\/td\u003e\n\u003ctd\u003e300 tests per kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSample Type\u003c\/td\u003e\n\u003ctd\u003eDrinking water, pool water, wastewater, process water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReagent Form\u003c\/td\u003e\n\u003ctd\u003ePre-measured powder packets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eTesting Procedure\u003c\/h2\u003e\n\u003col class=\"install-steps\"\u003e\n\u003cli\u003eFill the sample cuvette with 10 mL of water sample to the marked line and place it in the photometer to zero the instrument.\u003c\/li\u003e\n\u003cli\u003eAdd the contents of one HI93711-03 reagent packet to the sample cuvette, cap tightly, and shake vigorously for 20 seconds to fully dissolve the powder.\u003c\/li\u003e\n\u003cli\u003eAllow the sample to react for the time specified in your photometer's instructions (typically 2-3 minutes), then place the prepared cuvette in the meter and read the total chlorine concentration directly in mg\/L.\u003c\/li\u003e\n\u003cli\u003eRinse cuvettes thoroughly with deionized water between tests and store reagent packets in a cool, dry location away from direct sunlight.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWorks With These Hanna Instruments\u003c\/h2\u003e\n\u003cp\u003eThe HI93711-03 reagent kit is designed for use with Hanna portable and benchtop photometers that support the chlorine total DPD method, including the HI96711, HI96734, HI83399, HI83414, and other models featuring chlorine testing capabilities. Verify your specific photometer model supports method HI93711 before ordering. This reagent is not compatible with colorimetric comparators or test strips and requires a photometer for accurate digital readings.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n🔧 Store reagent packets in their original foil packaging until use and avoid touching the inside of cuvettes with your fingers—oils and contaminants will skew results. For the most consistent readings, test samples at the same temperature each time and always zero your photometer with untreated sample water before adding reagent.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470671315106,"sku":"HI93711-03","price":170.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi93711-03-chlorine-total-dpd-method-300-tests-886200.jpg?v=1759500435"},{"product_id":"hanna-hi93719-01-hardness-magnesium-edta-method-100-tests","title":"Hanna (HI93719-01) Hardness, Magnesium, EDTA Method (100 Tests)","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI93719-01 reagent kit delivers 100 precise EDTA titration tests for measuring magnesium hardness in water, expressed as calcium carbonate equivalents. Designed for laboratory or field use, this kit covers a range of 0.00 to 2.00 mg\/L with reliable colorimetric analysis.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eKey Testing Parameters\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTest Method\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eEDTA Titration\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eColorimetric analysis\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMeasurement Range\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0.00 – 2.00 mg\/L\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eAs CaCO₃\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTests Per Kit\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e100 Tests\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eFull reagent supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTarget Parameter\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eMagnesium Hardness\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eMg-specific\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eVendor\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eHanna Instruments\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eLaboratory grade\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eProduct Code\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eHI93719-01\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eOEM reagent pack\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eReagent Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHI93719-01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTest Methodology\u003c\/td\u003e\n\u003ctd\u003eEDTA complexometric titration with colorimetric endpoint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e0.00 to 2.00 mg\/L (expressed as CaCO₃ equivalents)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Tests\u003c\/td\u003e\n\u003ctd\u003e100 individual tests included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParameter Measured\u003c\/td\u003e\n\u003ctd\u003eMagnesium hardness (Mg²⁺ concentration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHanna Instruments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication Type\u003c\/td\u003e\n\u003ctd\u003eLaboratory and field water quality testing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eUse Cases and System Integration\u003c\/h2\u003e\n\u003cp\u003eThe HI93719-01 reagent pack is formulated for use with compatible Hanna photometers and colorimeters designed for hardness analysis. This EDTA method specifically targets magnesium hardness, making it ideal for monitoring water softening systems, boiler feedwater quality, aquaculture environments, and municipal water supplies where magnesium concentration affects scaling and corrosion. The kit integrates seamlessly with Hanna's broader water quality testing ecosystem, providing reliable data for treatment optimization and regulatory compliance reporting.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 \u003cstrong\u003ePro Tip:\u003c\/strong\u003e Store EDTA reagents in a cool, dark location and always check expiration dates before testing. Magnesium hardness readings help distinguish between calcium and magnesium contributions to total hardness, critical for tailoring ion exchange resin regeneration cycles in commercial water softening applications.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470687174818,"sku":"HI93719-01","price":115.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi93719-01-hardness-magnesium-edta-method-100-tests-867551.jpg?v=1759500437"},{"product_id":"hanna-hi93720-01-hardness-calcium-calmagite-method-100-tests","title":"Hanna (HI93720-01) Hardness Calcium, Calmagite Method (100 Tests)","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI93720-01 delivers 100 precise calcium hardness tests using the proven calmagite colorimetric method, covering a range of 0.00 to 2.70 mg\/L. Designed for laboratory and field testing, this reagent kit provides reliable water quality analysis for reverse osmosis systems, aquariums, and industrial water treatment applications.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eTechnical Details\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHI93720-01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e0.00 to 2.70 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTest Method\u003c\/td\u003e\n\u003ctd\u003eCalmagite Colorimetric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Tests\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParameter\u003c\/td\u003e\n\u003ctd\u003eCalcium Hardness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eWater Quality Analysis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eHanna Instruments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Meters\u003c\/td\u003e\n\u003ctd\u003eHanna Photometers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eTesting Procedure\u003c\/h2\u003e\n\u003col class=\"install-steps\"\u003e\n\u003cli\u003eCollect water sample in clean testing vessel and ensure sample is at room temperature for accurate readings\u003c\/li\u003e\n\u003cli\u003eAdd reagent packet contents to sample according to Hanna photometer instructions for HI93720-01\u003c\/li\u003e\n\u003cli\u003eMix thoroughly and allow reaction time as specified, then insert cuvette into compatible Hanna photometer\u003c\/li\u003e\n\u003cli\u003eRecord calcium hardness reading in mg\/L and store remaining reagents in cool, dry location away from direct sunlight\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eSystem Integration\u003c\/h2\u003e\n\u003cp\u003eThe HI93720-01 reagent kit works exclusively with Hanna photometers designed for calcium hardness testing. This calmagite method is ideal for monitoring RO system feed water, verifying water softener performance, and testing municipal or well water sources. The 0.00 to 2.70 mg\/L range covers typical low-hardness applications where precise calcium measurement is critical for equipment protection and process control.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n🔧 Store reagent packets in their original sealed packaging until use and check expiration dates regularly. Temperature fluctuations degrade colorimetric reagents, so keep your HI93720-01 kit in a stable environment for consistent test accuracy across all 100 tests.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470687633570,"sku":"HI93720-01","price":115.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi93720-01-hardness-calcium-calmagite-method-100-tests-118019.jpg?v=1759500437"},{"product_id":"hanna-hi93702-01-copper-hr-bicichoninate-acid-method-100-tests","title":"Hanna (HI93702-01) Copper HR, bicichoninate acid method (100 Tests)","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n\u003ch2\u003eHanna \u003cem\u003eHI93702-01 Copper HR Test Reagent\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eBicinchoninate acid method reagents for high-range copper testing in water, 0.00 to 5.00 mg\/L detection range, 100 tests per kit\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e100 Tests\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eHigh Range\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eBicinchoninate Method\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eBicinchoninate Acid Method for Precision Copper Detection\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔬\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eHigh Range Detection\u003c\/h3\u003e\n\u003cp\u003eMeasures copper concentrations from 0.00 to 5.00 mg\/L, designed for industrial water systems, boiler feed, and cooling tower applications where copper levels may be elevated\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🧪\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eBicinchoninate Chemistry\u003c\/h3\u003e\n\u003cp\u003eUses bicinchoninate acid colorimetric method for accurate copper detection, forming a stable purple complex that can be read photometrically with compatible Hanna meters\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📦\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003e100 Test Capacity\u003c\/h3\u003e\n\u003cp\u003eEach HI93702-01 kit includes reagents for 100 individual copper tests, providing extended testing capability for routine monitoring and quality control programs\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e✓\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eReady-to-Use Format\u003c\/h3\u003e\n\u003cp\u003ePre-measured reagent packets eliminate weighing and preparation errors, ensuring consistent results across multiple operators and testing sessions\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eCompatible Hanna Photometers\u003c\/h3\u003e\n\u003cp\u003eThe HI93702-01 reagent kit is designed for use with Hanna portable and benchtop photometers that support the copper HR testing method, including the HI83200 multiparameter meter and HI96702 copper photometer. Verify your instrument supports bicinchoninate method copper testing before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🎯\u003c\/div\u003e\n\u003ch4\u003eRegulatory Compliance\u003c\/h4\u003e\n\u003cp\u003eMonitor copper levels for EPA drinking water standards and industrial discharge permits\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e⚡\u003c\/div\u003e\n\u003ch4\u003eFast Results\u003c\/h4\u003e\n\u003cp\u003eColorimetric method delivers readings within minutes for immediate corrective action\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e📊\u003c\/div\u003e\n\u003ch4\u003eTraceable Accuracy\u003c\/h4\u003e\n\u003cp\u003eHanna reagents are manufactured to ISO standards for reliable, repeatable measurements\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e💧\u003c\/div\u003e\n\u003ch4\u003eWater Quality Monitoring\u003c\/h4\u003e\n\u003cp\u003eEssential for RO system diagnostics, corrosion control, and process water verification\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470687994018,"sku":"HI93702-01","price":92.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi93702-01-copper-hr-bicichoninate-acid-method-100-tests-625256.jpg?v=1759500438"},{"product_id":"hanna-hi93746-01-iron-lr-tptz-method-100-tests","title":"Hanna (HI93746-01) Iron LR, TPTZ Method (100 Tests)","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI93746-01 Iron LR reagent kit provides 100 precise colorimetric tests for low-range iron detection in drinking water, aquariums, and process water using the TPTZ method. Measures ferrous and total iron from 0.00 to 1.00 mg\/L with results readable on compatible Hanna photometers.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eTest Kit Overview\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eModel Number\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eHI93746-01\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eHanna Instruments\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTest Method\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eTPTZ\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eColorimetric analysis\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eRange\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0.00 - 1.00 mg\/L\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eLow range iron\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTests Included\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e100\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eComplete reagent set\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eParameter\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eIron (Fe)\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eFerrous \u0026amp; total iron\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eFormat\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eReagent\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eRequires photometer\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eReagent Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eHanna Instruments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eHI93746-01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Method\u003c\/td\u003e\n\u003ctd\u003eTPTZ (2,4,6-tripyridyl-s-triazine) colorimetric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e0.00 to 1.00 mg\/L (ppm) iron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Tests\u003c\/td\u003e\n\u003ctd\u003e100 tests per kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Photometers\u003c\/td\u003e\n\u003ctd\u003eHI83300, HI83200, HI96746, and other Hanna iron photometers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Requirements\u003c\/td\u003e\n\u003ctd\u003eStore in cool, dry location away from direct sunlight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eUses and System Integration\u003c\/h2\u003e\n\u003cp\u003e\nThe HI93746-01 reagent kit is designed for use with Hanna's portable and benchtop photometers that support iron testing at low concentrations. Ideal for monitoring iron levels in municipal drinking water, residential well water, aquarium and aquaculture systems, and process water where ferrous iron and total iron measurement is critical. The TPTZ method provides reliable colorimetric analysis for iron detection below 1 mg\/L, making it suitable for verifying water treatment effectiveness, identifying corrosion in distribution systems, and ensuring water quality compliance. This reagent kit is a consumable component that requires a compatible Hanna photometer for accurate measurement and readout.\n\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 Each reagent packet is pre-measured for consistency. Always check expiration dates and store reagents away from moisture to maintain accuracy across all 100 tests.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470710145186,"sku":"HI93746-01","price":128.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536767836322-padded.jpg?v=1777265146"},{"product_id":"hanna-hi93728-01-nitrate-cadmium-reduction-method-100-tests","title":"Hanna (HI93728-01) Nitrate, Cadmium Reduction Method (100 Tests)","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n \u003cdiv class=\"ro-hero\"\u003e\n \u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n \u003ch2\u003eHI93728-01 Nitrate Test Reagent Kit\u003c\/h2\u003e\n \u003cdiv class=\"ro-tagline\"\u003eCadmium reduction method reagents for precise nitrate measurement in drinking water, aquariums, and irrigation systems\u003c\/div\u003e\n \u003cdiv class=\"ro-badges\"\u003e\n \u003cspan class=\"ro-badge\"\u003e100 Tests\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003e0.0–30.0 mg\/L Range\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003eCadmium Reduction\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003eEPA Compliant\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-callout\"\u003e\n \u003cp\u003eThe Hanna HI93728-01 reagent kit uses the cadmium reduction method to accurately measure nitrate levels in water from 0.0 to 30.0 mg\/L. This 100-test kit is designed for use with Hanna photometers and colorimeters, providing reliable nitrate testing for drinking water compliance, aquaculture monitoring, and agricultural water analysis.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eHOW IT WORKS\u003c\/div\u003e\n \u003ch3 class=\"ro-title\"\u003eCadmium Reduction Process\u003c\/h3\u003e\n \u003cdiv class=\"stage-pipeline\"\u003e\n \u003cdiv class=\"stage-row\"\u003e\n \u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n \u003cdiv class=\"stage-num\"\u003e1\u003c\/div\u003e\n \u003cdiv class=\"stage-body\"\u003e\n \u003cspan class=\"stage-tag\"\u003ePREPARATION\u003c\/span\u003e\n \u003ch3\u003eSample Collection\u003c\/h3\u003e\n \u003cp\u003eCollect water sample in clean cuvette or test vial. Sample should be free of large particulates and at room temperature for accurate analysis.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"stage-row\"\u003e\n \u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n \u003cdiv class=\"stage-num\"\u003e2\u003c\/div\u003e\n \u003cdiv class=\"stage-body\"\u003e\n \u003cspan class=\"stage-tag\"\u003eREDUCTION\u003c\/span\u003e\n \u003ch3\u003eReagent Addition\u003c\/h3\u003e\n \u003cp\u003eAdd HI93728-01 reagent to sample. Cadmium metal reduces nitrate to nitrite, which then reacts to form a pink-colored complex proportional to nitrate concentration.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"stage-row\"\u003e\n \u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n \u003cdiv class=\"stage-num\"\u003e3\u003c\/div\u003e\n \u003cdiv class=\"stage-body\"\u003e\n \u003cspan class=\"stage-tag\"\u003eREACTION\u003c\/span\u003e\n \u003ch3\u003eColor Development\u003c\/h3\u003e\n \u003cp\u003eAllow reaction time as specified in instructions. The intensity of pink color corresponds directly to nitrate level present in the water sample.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"stage-row\"\u003e\n \u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n \u003cdiv class=\"stage-num\"\u003e4\u003c\/div\u003e\n \u003cdiv class=\"stage-body\"\u003e\n \u003cspan class=\"stage-tag\"\u003eMEASUREMENT\u003c\/span\u003e\n \u003ch3\u003ePhotometric Reading\u003c\/h3\u003e\n \u003cp\u003eInsert prepared sample into compatible Hanna photometer. Device measures absorbance and calculates nitrate concentration in mg\/L with lab-grade accuracy.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n \u003ch3 class=\"ro-title\"\u003eCompatible Hanna Instruments\u003c\/h3\u003e\n \u003cp\u003eThe HI93728-01 reagent kit is designed for use with Hanna photometers and colorimeters that support the nitrate cadmium reduction method. Compatible models include the HI83200, HI83300, and other benchtop or portable photometers with nitrate testing capability. Each kit provides 100 tests with a measurement range of 0.0 to 30.0 mg\/L, ideal for monitoring drinking water compliance with EPA standards, testing aquarium or aquaculture water quality, and evaluating agricultural irrigation sources. Store reagents in a cool, dry place away from direct sunlight and follow expiration dates for accurate results.\u003c\/p\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470711357602,"sku":"HI93728-01","price":165.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536768098466-padded.jpg?v=1777265141"},{"product_id":"hanna-hi93706-01-phosphorous-amino-acid-method-100-tests","title":"Hanna (HI93706-01) Phosphorous, amino acid method (100 Tests)","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI93706-01 reagent kit delivers 100 tests for phosphorous measurement using the amino acid reduction method, with a reliable range of 0.0 to 15.0 mg\/L. Designed for use with Hanna photometers, this kit provides consistent accuracy for monitoring phosphorous levels in drinking water, aquariums, hydroponics, and municipal water systems.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eHI93706-01 Test Kit Overview\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eModel Number\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eHI93706-01\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eHanna Instruments\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTest Count\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e100 Tests\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003ePer kit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eMeasurement Range\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e0.0–15.0 mg\/L\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003ePhosphorous as P\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTest Method\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eAmino Acid\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eReduction method\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eParameter\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003ePhosphorous\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eTotal phosphorous\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eBrand\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eHanna\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eWater Quality Meters\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eReagent Kit Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003ePhosphorous test reagents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTest Method\u003c\/td\u003e\n\u003ctd\u003eAmino acid reduction method\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e0.0 to 15.0 mg\/L (ppm) phosphorous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Tests\u003c\/td\u003e\n\u003ctd\u003e100 tests per kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Photometers\u003c\/td\u003e\n\u003ctd\u003eHanna photometers for phosphorous testing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eDrinking water, aquariums, hydroponics, municipal water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eHanna Instruments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWhere to Use the HI93706-01\u003c\/h2\u003e\n\u003cp\u003eThis reagent kit is designed for use with compatible Hanna photometers that support the amino acid method for phosphorous testing. Ideal for regular monitoring in residential water filtration systems, reverse osmosis system output, aquarium maintenance, hydroponic nutrient solutions, and municipal water quality testing. Phosphorous monitoring helps prevent algae growth, maintain healthy aquatic environments, and ensure compliance with water quality standards. The amino acid method provides reliable results without the need for harsh chemicals or complex procedures, making it suitable for both professional laboratories and field testing applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 Store reagents in a cool, dry place away from direct sunlight to maintain accuracy throughout the kit's shelf life. Always verify your photometer is calibrated before running tests for the most reliable phosphorous readings.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470721417378,"sku":"HI93706-01","price":79.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi93706-01-phosphorous-amino-acid-method-100-tests-875392.jpg?v=1759500444"},{"product_id":"hanna-hi93710-01-ph-phenol-red-method-100-tests","title":"Hanna (HI93710-01) pH, Phenol Red Method (100 Tests)","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n \u003cdiv class=\"ro-callout\"\u003e\n The Hanna HI93710-01 reagent kit delivers precise pH measurement using the reliable phenol red colorimetric method, providing 100 tests for water analysis between 5.9 and 8.5 pH. This professional-grade testing solution is designed for accurate field and laboratory pH determination without the need for electronic calibration.\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n \u003ch2 class=\"ro-title\"\u003eTechnical Details\u003c\/h2\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003ctr\u003e\n \u003ctd\u003eModel Number\u003c\/td\u003e\n \u003ctd\u003eHI93710-01\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003eHanna Instruments\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTest Method\u003c\/td\u003e\n \u003ctd\u003ePhenol Red Colorimetric\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003epH Range\u003c\/td\u003e\n \u003ctd\u003e5.9 to 8.5 pH (6.5 extended on compatible meters)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNumber of Tests\u003c\/td\u003e\n \u003ctd\u003e100 tests per kit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eApplication\u003c\/td\u003e\n \u003ctd\u003eDrinking water, aquarium, pool, lab analysis\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eFormat\u003c\/td\u003e\n \u003ctd\u003eLiquid reagent\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompatible Products\u003c\/td\u003e\n \u003ctd\u003eHanna photometers and colorimeters\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n \u003ch2 class=\"ro-title\"\u003eTesting Procedure\u003c\/h2\u003e\n \u003col class=\"install-steps\"\u003e\n \u003cli\u003eFill a clean sample cell with 10 mL of the water sample to be tested\u003c\/li\u003e\n \u003cli\u003eAdd the phenol red reagent according to the dosage instructions included with your Hanna meter or follow the kit insert\u003c\/li\u003e\n \u003cli\u003eCap the sample cell and invert several times to mix thoroughly, then allow color to develop for the specified reaction time\u003c\/li\u003e\n \u003cli\u003eInsert the prepared sample into your Hanna photometer or compare color against the provided chart to determine pH value\u003c\/li\u003e\n \u003cli\u003eRinse sample cells with deionized water between tests and store reagents in a cool, dry location away from direct sunlight\u003c\/li\u003e\n \u003c\/ol\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n \u003ch2 class=\"ro-title\"\u003eWorks With\u003c\/h2\u003e\n \u003cp\u003eThe HI93710-01 reagent kit is designed for use with Hanna Instruments photometers and colorimeters that support phenol red pH testing. Compatible models include the HI96710 and other Hanna meters designed for pH analysis. Some meters allow extended range reading down to 6.5 pH through software calibration. This reagent is ideal for routine water quality monitoring in municipal water systems, reverse osmosis testing, aquarium maintenance, and pool water analysis where reliable pH measurement is required without electronic pH probe maintenance.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"pro-tip\"\u003e\n 🔧 \u003cstrong\u003ePro Tip:\u003c\/strong\u003e Always zero your photometer with a blank sample (untreated water) before adding reagent to ensure accurate readings. Store reagents tightly capped and note the expiration date to maintain test accuracy over the life of the kit.\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470723907746,"sku":"HI93710-01","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi93710-01-ph-phenol-red-method-100-tests-818721.jpg?v=1762459888"},{"product_id":"hanna-hi3824-025-ammonia-as-nh3-n-reagent-kit-25-tests","title":"Hanna (HI3824-025) Ammonia, (as NH3-N) Reagent Kit - 25 Tests","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI3824-025 Ammonia Reagent Kit delivers reliable colorimetric testing for freshwater ammonia levels using the trusted Nessler chemical method. This 25-test kit provides accurate measurements from 0.0 to 2.5 mg\/L with 0.5 mg\/L resolution, essential for aquaculture, aquarium maintenance, and freshwater quality monitoring.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eTechnical Details\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHanna HI3824-025\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e0.0 to 2.5 mg\/L (as NH3-N)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTest Method\u003c\/td\u003e\n\u003ctd\u003eColorimetric (Nessler)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.5 mg\/L increments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Tests\u003c\/td\u003e\n\u003ctd\u003e25 tests per kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eFreshwater ammonia testing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e180 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired Equipment\u003c\/td\u003e\n\u003ctd\u003eHI 3824 Test Kit (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eTesting Procedure\u003c\/h2\u003e\n\u003col class=\"install-steps\"\u003e\n\u003cli\u003eCollect a freshwater sample in a clean test vial from your aquarium, pond, or water source\u003c\/li\u003e\n\u003cli\u003eAdd the Nessler reagent from the HI3824-025 kit following the dosage instructions included with your HI 3824 Test Kit\u003c\/li\u003e\n\u003cli\u003eAllow the color reaction to develop according to the specified time interval\u003c\/li\u003e\n\u003cli\u003eCompare the sample color against the provided color chart to determine ammonia concentration in 0.5 mg\/L increments\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eSystem Requirements\u003c\/h2\u003e\n\u003cp\u003eThe Hanna HI3824-025 reagent refill kit is designed exclusively for use with the Hanna HI 3824 Ammonia Test Kit (sold separately). This reagent is formulated for freshwater ammonia testing and uses the Nessler colorimetric method. Not suitable for saltwater or marine applications. Each kit provides sufficient reagent for 25 individual ammonia tests within the 0.0 to 2.5 mg\/L range.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n🔧 Store reagents in a cool, dry location away from direct sunlight to maintain accuracy throughout the kit's shelf life. Mark the purchase date on the bottle and always check expiration dates before testing, as expired reagents can yield false readings in ammonia concentration.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470724595874,"sku":"HI3824-025","price":56.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi3824-025-ammonia-as-nh3-n-reagent-kit-25-tests-784292.jpg?v=1759500446"},{"product_id":"hanna-hi70080p-800-ppm-mg-l-25-x-20-ml-sachets","title":"Hanna (HI70080P) 800 ppm (mg-L) 25 x 20 mL sachets","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments Calibration Solution\u003c\/div\u003e\n\u003ch2\u003e\u003cem\u003eHanna HI70080P 800 ppm TDS Calibration Solution\u003c\/em\u003e\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003e25 sachets of 20 mL calibration solution for accurate TDS meter verification at 800 mg\/L\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e800 ppm Standard\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e25 x 20mL Sachets\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eLab Grade\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003ePrecision potassium chloride solution for reliable meter calibration\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🎯\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eNIST Traceable\u003c\/h3\u003e\n\u003cp\u003eStandardized using conductivity meters calibrated with NIST potassium chloride for verified accuracy in every batch\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e💧\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eSingle-Use Sachets\u003c\/h3\u003e\n\u003cp\u003e20 mL sachets eliminate contamination risk from repeated bottle opening and ensure fresh solution every time\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔬\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eHigh Purity KCl\u003c\/h3\u003e\n\u003cp\u003eMade with laboratory-grade potassium chloride to match the ionic behavior of dissolved solids in real-world samples\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🛡️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eLight \u0026amp; Air Protection\u003c\/h3\u003e\n\u003cp\u003eSealed packaging prevents oxidation and photodegradation that can alter conductivity values over time\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWorks with Hanna TDS and conductivity meters\u003c\/h3\u003e\n\u003cp\u003eThe HI70080P 800 ppm calibration solution is designed for use with Hanna Instruments TDS meters, conductivity testers, and portable meters requiring an 800 mg\/L standard. Compatible with HI98301, HI98302, HI98303, HI98304, HI98308, HI98309, HI98311, HI98312, and other Hanna TDS meters. Also suitable for competitive meters that accept 800 ppm potassium chloride solutions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eMAINTENANCE\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eCalibration frequency for measurement accuracy\u003c\/h3\u003e\n\u003cdiv class=\"filter-schedule\"\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eDaily\u003c\/div\u003e\n\u003ch4\u003eHigh-Volume Labs\u003c\/h4\u003e\n\u003cp\u003eCalibrate before each shift or session when running multiple samples per day in commercial or industrial settings\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eWeekly\u003c\/div\u003e\n\u003ch4\u003eRegular Use\u003c\/h4\u003e\n\u003cp\u003eVerify calibration weekly for routine water quality monitoring, aquarium maintenance, and hydroponics applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eBefore Critical Tests\u003c\/div\u003e\n\u003ch4\u003eQuality Control\u003c\/h4\u003e\n\u003cp\u003eAlways calibrate before compliance testing, process verification, or when measurement accuracy is critical\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eAfter Storage\u003c\/div\u003e\n\u003ch4\u003ePeriodic Users\u003c\/h4\u003e\n\u003cp\u003eRecalibrate if meter has been unused for 30 days or exposed to temperature extremes or contamination\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e📦\u003c\/div\u003e\n\u003ch4\u003e25 Sachet Box\u003c\/h4\u003e\n\u003cp\u003eEnough for months of regular calibration without bulk solution waste\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e⚗️\u003c\/div\u003e\n\u003ch4\u003eLab \u0026amp; Field Ready\u003c\/h4\u003e\n\u003cp\u003ePortable sachets work equally well in controlled labs or outdoor testing sites\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e🔒\u003c\/div\u003e\n\u003ch4\u003eSealed Freshness\u003c\/h4\u003e\n\u003cp\u003eEach sachet stays stable until opened, unlike bottles that degrade after first use\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e✓\u003c\/div\u003e\n\u003ch4\u003eIndustry Standard\u003c\/h4\u003e\n\u003cp\u003e800 ppm is a common mid-range point for verifying TDS meters across typical water ranges\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470724858018,"sku":"HI70080P","price":68.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi70080p-800-ppm-mg-l-25-x-20-ml-sachets-522800.jpg?v=1759500445"},{"product_id":"hanna-hi70032p-1382-ppm-25c-tds-calibration-solution-20ml-sachet-25-pack","title":"Hanna (HI70032P) 1382 PPM @ 25C TDS Calibration Solution, 20mL-sachet; 25 pack","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI70032P delivers laboratory-grade TDS calibration at 1382 PPM, packaged in 25 individual 20mL sachets for single-use accuracy. Each sachet contains high-purity potassium chloride solution standardized against NIST-traceable conductivity standards, ensuring your TDS meter reads with precision every time.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eCalibration Standard Details\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTDS Concentration\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e1382 PPM\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eAt 25°C reference temp\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003ePackage Count\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e25 Sachets\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003e20mL per sachet\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eSolution Base\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003ePotassium Chloride\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eHigh-purity grade\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eStandardization\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eNIST Traceable\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eConductivity calibrated\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003ePackaging Design\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eLight \u0026amp; Air Sealed\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003ePrevents degradation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eUsage Type\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eSingle-Use\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eNo contamination risk\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eProduct Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHI70032P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eHanna Instruments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolution Type\u003c\/td\u003e\n\u003ctd\u003eTotal Dissolved Solids (TDS) Calibration Standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConcentration\u003c\/td\u003e\n\u003ctd\u003e1382 mg\/L (PPM) at 25°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical Composition\u003c\/td\u003e\n\u003ctd\u003eHigh-quality potassium chloride in deionized water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Quantity\u003c\/td\u003e\n\u003ctd\u003e25 sachets × 20mL each\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTraceability\u003c\/td\u003e\n\u003ctd\u003eStandardized against NIST potassium chloride conductivity standards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eDesigned For\u003c\/h2\u003e\n\u003cp\u003eThe HI70032P calibration solution works with all Hanna TDS meters and most universal TDS\/conductivity testers that accept single-point or multi-point calibration at 1382 PPM. Ideal for water treatment professionals, aquarium maintenance, hydroponics growers, and reverse osmosis system installers who need to verify meter accuracy before critical testing. Single-use sachets eliminate cross-contamination and solution degradation common with bottled calibrators, making this format perfect for field work, mobile service, or high-volume labs where fresh solution integrity matters.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 \u003cstrong\u003ePro Tip:\u003c\/strong\u003e Calibrate your TDS meter every 1-2 weeks if used daily, or before any critical measurement. The single-use sachet format means you're always calibrating with fresh, uncontaminated solution—tear, pour, calibrate, and dispose without worrying about storage or expiration of opened bottles.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470725480610,"sku":"HI70032P","price":68.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536777994402-padded.jpg?v=1777264915"},{"product_id":"hanna-hi7036l-12-41-ppt-g-l-1-x-500-ml-bottle","title":"Hanna (HI7036L) 12.41 ppt (g-L) 1 x 500 mL bottle","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI7036L delivers laboratory-grade TDS calibration solution at 12.41 ppt (12.41 g\/L), formulated with high-purity potassium chloride and certified against NIST standards. This 500 mL bottle provides reliable reference material for accurate calibration of conductivity and TDS meters in lab and field environments.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eTechnical Details\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHI7036L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConcentration\u003c\/td\u003e\n\u003ctd\u003e12.41 ppt (12.41 g\/L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolution Type\u003c\/td\u003e\n\u003ctd\u003ePotassium Chloride (KCl)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottle Volume\u003c\/td\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertification\u003c\/td\u003e\n\u003ctd\u003eNIST-traceable conductivity standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackaging\u003c\/td\u003e\n\u003ctd\u003eLight- and air-resistant bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eLab and field calibration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eHanna Instruments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eCalibration Procedure\u003c\/h2\u003e\n\u003col class=\"install-steps\"\u003e\n\u003cli\u003eRinse the conductivity or TDS meter probe with distilled or deionized water and gently blot dry with a clean lint-free cloth.\u003c\/li\u003e\n\u003cli\u003ePour a small amount of HI7036L calibration solution into a clean container, ensuring the probe sensor is fully submerged.\u003c\/li\u003e\n\u003cli\u003eFollow your meter's calibration protocol to adjust the reading to 12.41 ppt or the equivalent conductivity value specified in your instrument manual.\u003c\/li\u003e\n\u003cli\u003eRinse the probe thoroughly with distilled water after calibration and store according to manufacturer guidelines.\u003c\/li\u003e\n\u003cli\u003eDiscard used calibration solution; do not return it to the original bottle to prevent contamination.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eMeter Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe Hanna HI7036L calibration solution is compatible with all Hanna conductivity and TDS meters, as well as third-party instruments that accept potassium chloride-based calibration standards at 12.41 ppt concentration. Ideal for calibrating handheld testers, benchtop meters, and portable field instruments used in water quality testing, aquaculture, hydroponics, and laboratory research applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n🔧 Always use fresh calibration solution poured into a separate container. Repeatedly dipping probes directly into the original bottle introduces contaminants that degrade accuracy over time.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470726856866,"sku":"HI7036L","price":36.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi7036l-1241-ppt-g-l-1-x-500-ml-bottle-645587.jpg?v=1759500447"},{"product_id":"hanna-hi70031p-1413-s-cm-ec-conductivity-calibration-solution-20ml-sachet-25-pack","title":"Hanna (HI70031P) 1413 S-cm (EC) Conductivity Calibration Solution, 20mL-sachet; 25 pack","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments Calibration Solution\u003c\/div\u003e\n\u003ch2\u003e\u003cem\u003eHI70031P 1413 µS\/cm EC Conductivity Calibration Solution\u003c\/em\u003e\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003ePrecision conductivity standard for accurate EC meter calibration, 25-pack of ready-to-use 20mL sachets\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 1413 µS\/cm reference standard\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Single-use 20mL sachets\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 25 packets per box\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ No contamination risk\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Hanna HI70031P delivers \u003cstrong\u003e1413 µS\/cm conductivity calibration solution\u003c\/strong\u003e in convenient single-dose sachets that eliminate cross-contamination between calibrations. Each \u003cstrong\u003e20mL packet\u003c\/strong\u003e provides the exact volume needed for one calibration cycle, making it the standard choice for routine EC meter maintenance in water treatment, hydroponics, and aquaculture applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eKEY FEATURES\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003ePrecision Calibration in Single-Use Format\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📏\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003e1413 µS\/cm Standard\u003c\/h3\u003e\n\u003cp\u003eGeneral-purpose conductivity reference suited for most water quality monitoring applications, from agricultural to industrial use\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e💧\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003e20mL Sachet Format\u003c\/h3\u003e\n\u003cp\u003eSingle-use packets provide fresh solution for each calibration with no bottle contamination or degradation over time\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📦\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003e25-Pack Box\u003c\/h3\u003e\n\u003cp\u003eBulk packaging for labs and facilities performing regular calibrations, with long shelf life when stored properly\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔬\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eHanna Quality\u003c\/h3\u003e\n\u003cp\u003eManufactured to strict tolerances for reliable EC meter performance and traceability in testing protocols\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🎯\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eMulti-Parameter Ready\u003c\/h3\u003e\n\u003cp\u003eCompatible with combination pH\/EC meters when used alongside pH 7 buffer solutions for full instrument calibration\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e♻️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eZero Waste Risk\u003c\/h3\u003e\n\u003cp\u003eUse the entire sachet contents per calibration with no leftover solution to store or discard, reducing waste and costs\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eUniversal EC Meter Calibration\u003c\/h3\u003e\n\u003cp\u003eThe HI70031P 1413 µS\/cm solution works with all Hanna conductivity meters and most EC meters from other manufacturers. Ideal for calibrating instruments used in reverse osmosis monitoring, hydroponic nutrient solution testing, aquarium water quality assessment, and industrial process water analysis. Pair with Hanna pH calibration buffers for complete multiparameter instrument setup. The 1413 µS\/cm concentration serves as the standard mid-range calibration point for general water testing across agricultural, municipal, and commercial applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eHanna Instruments has been the standard in water quality instrumentation for decades, trusted by professionals who require consistent, traceable calibration results.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470738620578,"sku":"HI70031P","price":68.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536785301666-padded.jpg?v=1777264904"},{"product_id":"hanna-hi7031l-1413-µs-cm-µmho-cm-1-x-500-ml-bottle","title":"Hanna (HI7031L) 1413 µS-cm (µmho-cm) 1 x 500 mL bottle","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n\u003ch2\u003eHI7031L 1413 µS\/cm Conductivity Calibration Solution\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003e500 mL bottle of precision conductivity standard for accurate meter calibration\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e1413 µS\/cm\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e500 mL Bottle\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eGeneral Use\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eLab Grade\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI7031L is a 1413 microsiemens per centimeter conductivity calibration solution designed for routine meter calibration across laboratory and field applications. This mid-range standard provides the most practical reference point for general conductivity measurements in municipal water, aquaculture, and light industrial environments.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eHOW IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eConductivity Calibration Process\u003c\/h3\u003e\n\u003cdiv class=\"stage-pipeline\"\u003e\n\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e1\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003ePREPARE\u003c\/span\u003e\n\u003ch3\u003eRinse Electrode\u003c\/h3\u003e\n\u003cp\u003eRinse the conductivity probe with distilled or deionized water and gently blot dry with a lint-free tissue before immersing in the HI7031L solution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e2\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003eCALIBRATE\u003c\/span\u003e\n\u003ch3\u003eImmerse and Stabilize\u003c\/h3\u003e\n\u003cp\u003eSubmerge the electrode fully into the 1413 µS\/cm solution and allow the reading to stabilize at ambient temperature before executing the calibration sequence on your meter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e3\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003eVERIFY\u003c\/span\u003e\n\u003ch3\u003eConfirm Accuracy\u003c\/h3\u003e\n\u003cp\u003eAfter calibration, verify the meter reads 1413 µS\/cm (±1%) when re-immersed in fresh solution to ensure proper calibration and electrode function.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eMeter and Application Range\u003c\/h3\u003e\n\u003cp\u003eThe HI7031L 1413 µS\/cm solution is compatible with all Hanna portable and benchtop conductivity meters, as well as multiparameter instruments requiring EC calibration. This standard works with most major conductivity meter brands and is the preferred calibration point for drinking water, hydroponic nutrient monitoring, cooling tower management, and general aqueous solutions between 500 and 5000 µS\/cm. The 500 mL bottle provides enough solution for approximately 50 calibrations when used with proper technique and poured into a clean vessel rather than dipping electrodes directly into the stock bottle.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35470740717730,"sku":"HI7031L","price":30.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5536786612386-padded.jpg?v=1777264988"},{"product_id":"hanna-hi98309-pure-h2o-upw-conductivity-meter-0-0-to-1-999-s-cm","title":"Hanna (HI98309) Pure H2O \"UPW\" Conductivity Meter 0.0 to 1.999 S-cm","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n\u003ch2\u003eHI98309 Pure H2O \"UPW\" Conductivity Meter\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003eUltra-precision conductivity testing for ultrapure water applications down to 0.001 µS\/cm resolution\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e0.000–1.999 µS\/cm Range\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eGraphite Sensors\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eReplaceable Probe\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003eFactory Calibrated\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Hanna HI98309 UPW meter is purpose-built for testing deionized, demineralized, and ultrapure water where conventional conductivity meters lack the sensitivity to detect minute contamination. With 0.001 µS\/cm resolution and graphite sensors that resist polarization, it delivers accurate spot checks in pharmaceutical, electronics, laboratory, and industrial ultrapure water systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eIDEAL APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWhere Ultra-Low Conductivity Detection Matters\u003c\/h3\u003e\n\u003cp\u003eThis meter excels in environments where water purity is critical: printed circuit board washing operations, pharmaceutical water systems, laboratory reagent preparation, automotive battery water verification, steam cleaning systems, and any process requiring deionized or distilled water quality assurance. The exposed temperature probe provides fast thermal response, while the durable industrial housing protects the instrument in harsh environments. Factory calibration eliminates setup hassle, and the replaceable probe design extends instrument life without full unit replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eTechnical Details\u003c\/h3\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI98309\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.000 to 1.999 µS\/cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.001 µS\/cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±2% Full Scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGraphite (reduced polarization)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProbe Design\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExposed temperature probe, replaceable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFactory calibrated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 × 1.5V batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 250 hours continuous use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Environment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–50°C (32–122°F), RH max 95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e175 × 41 × 23 mm (6.9 × 1.6 × 0.9\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e95 g (3.4 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWhat This Meter Tests\u003c\/h3\u003e\n\u003cp\u003eThe HI98309 is designed specifically for ultrapure, deionized, distilled, and demineralized water with conductivity below 2.0 µS\/cm. It is not suitable for tap water, wastewater, or high-conductivity solutions. Use this meter when verifying reverse osmosis permeate quality, deionization system output, distillation equipment performance, or any application where contamination detection at the sub-microsiemens level is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35471885992098,"sku":"HI98309","price":542.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi98309-pure-h2o-upw-conductivity-meter-00-to-1999-s-cm-465745.jpg?v=1759500818"},{"product_id":"hanna-hi93746-01-iron-reagent-kit-for-50-tests-fe-lr","title":"Hanna (HI93746-01) Iron Reagent kit for 50 tests (Fe LR)","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n \n \u003cdiv class=\"ro-callout\"\u003e\n The Hanna HI93746-01 Iron Reagent kit delivers 50 precise low-range iron tests for use with compatible Hanna photometers and colorimeters. This reagent set uses the phenanthroline method to accurately measure iron concentrations in drinking water, well water, and treated water systems.\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n \u003ch2 class=\"ro-title\"\u003eTechnical Details\u003c\/h2\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003ctr\u003e\n \u003ctd\u003eModel Number\u003c\/td\u003e\n \u003ctd\u003eHI93746-01\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTest Method\u003c\/td\u003e\n \u003ctd\u003ePhenanthroline\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNumber of Tests\u003c\/td\u003e\n \u003ctd\u003e50\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eParameter\u003c\/td\u003e\n \u003ctd\u003eIron, Low Range (Fe LR)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMeasurement Range\u003c\/td\u003e\n \u003ctd\u003e0 to 5.00 mg\/L (ppm)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eBrand\u003c\/td\u003e\n \u003ctd\u003eHanna Instruments\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eStorage\u003c\/td\u003e\n \u003ctd\u003eStore at room temperature\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eApplication\u003c\/td\u003e\n \u003ctd\u003eDrinking water, well water, filtration systems\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n \u003ch2 class=\"ro-title\"\u003eTesting Procedure\u003c\/h2\u003e\n \u003col class=\"install-steps\"\u003e\n \u003cli\u003eFill the sample cuvette with 10 mL of water sample to be tested and zero the photometer with the blank sample.\u003c\/li\u003e\n \u003cli\u003eAdd the HI93746-01 reagent packet contents to a second cuvette containing 10 mL of the same water sample and mix thoroughly.\u003c\/li\u003e\n \u003cli\u003eWait for the reaction time specified in your Hanna photometer manual, then insert the prepared sample and read the iron concentration directly from the meter display.\u003c\/li\u003e\n \u003cli\u003eRinse cuvettes with deionized water between tests and store unused reagent packets in a cool, dry location away from direct sunlight.\u003c\/li\u003e\n \u003c\/ol\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n \u003ch2 class=\"ro-title\"\u003eCompatible Instruments\u003c\/h2\u003e\n \u003cp\u003eThe Hanna HI93746-01 reagent kit is designed for use with Hanna photometers and colorimeters that support low-range iron testing, including the HI96746 Iron Portable Photometer and HI83746 Multi-Parameter Photometer. This reagent is formulated specifically for the phenanthroline method and ensures accurate, repeatable results when testing for iron contamination in residential well water, municipal water supplies, and reverse osmosis system feed water. Always verify reagent compatibility with your specific Hanna meter model before use.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"pro-tip\"\u003e\n 🔧 \u003cstrong\u003ePro tip:\u003c\/strong\u003e Test your water source for iron before installing or servicing filtration equipment. Iron levels above 0.3 mg\/L can foul RO membranes, stain fixtures, and shorten filter life. Regular testing with the HI93746-01 kit helps you catch iron contamination early and adjust treatment accordingly.\n \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35471906504866,"sku":"HI93746-01","price":128.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi93746-01-iron-reagent-kit-for-50-tests-fe-lr-722011.jpg?v=1759500821"},{"product_id":"hanna-hi93748-01-manganese-reagent-kit-for-50-tests-mnlr","title":"Hanna (HI93748-01) Manganese Reagent kit for 50 tests (MnLR)","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments Water Testing\u003c\/div\u003e\n\u003ch2\u003e\n\u003cem\u003eHanna HI93748-01\u003c\/em\u003e Manganese Reagent Kit\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003eLow-range manganese testing reagents for 50 precise measurements with HI93748 photometer\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 50 tests per kit\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Low-range Mn detection\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Hanna certified reagents\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Laboratory accuracy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Hanna HI93748-01 reagent kit provides everything needed for \u003cstrong\u003e50 low-range manganese tests\u003c\/strong\u003e when paired with the HI93748 photometer. Essential for monitoring manganese levels in drinking water, well water, and industrial process water where manganese contamination affects taste, staining, and equipment performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eKEY FEATURES\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003ePrecision Manganese Testing Made Simple\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🧪\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003e50 Test Capacity\u003c\/h3\u003e\n\u003cp\u003eComplete reagent set delivers 50 individual manganese measurements for extended monitoring and quality control protocols\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🎯\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eLow Range Detection\u003c\/h3\u003e\n\u003cp\u003eOptimized for low-range manganese analysis, ideal for drinking water standards and EPA compliance testing\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📊\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003ePhotometer Compatible\u003c\/h3\u003e\n\u003cp\u003eDesigned specifically for use with Hanna HI93748 manganese photometer for accurate colorimetric analysis\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e✓\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eQuality Certified\u003c\/h3\u003e\n\u003cp\u003eManufactured to Hanna's rigorous standards with lot-specific certificates ensuring consistent, reliable results\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e💧\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eWater Quality Essential\u003c\/h3\u003e\n\u003cp\u003eMonitor manganese that causes brown staining, metallic taste, and bacterial growth in distribution systems\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔬\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eProfessional Grade\u003c\/h3\u003e\n\u003cp\u003eLab-quality reagents suitable for municipalities, treatment facilities, and compliance testing applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eSystem Requirements\u003c\/h3\u003e\n\u003cp\u003eThe HI93748-01 reagent kit is designed exclusively for the Hanna HI93748 Manganese Low Range Portable Photometer. Ideal for testing municipal drinking water, private well water, surface water sources, reverse osmosis feed water, and industrial process water. Manganese testing is critical for water treatment facilities, well owners, and anyone monitoring iron and manganese removal systems where levels above 0.05 mg\/L can cause staining and aesthetic issues.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eHanna Instruments reagent kits are trusted by water treatment professionals worldwide for consistent accuracy and reliable shelf life when stored properly.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35471907029154,"sku":"HI93748-01","price":321.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi93748-01-manganese-reagent-kit-for-50-tests-mnlr-959483.jpg?v=1759500821"},{"product_id":"hanna-hi98107-phep-economical-ph-tester","title":"Hanna (HI98107) pHep Economical pH Tester","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments pH Testing\u003c\/div\u003e\n\u003ch2\u003e\n\u003cem\u003eHI98107 pHep\u003c\/em\u003e Economical pH Tester\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003eAffordable, field-proven pH measurement with renewable junction technology for extended service life\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Renewable cloth junction\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 700-hour battery life\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Manual 1 or 2-point calibration\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 0.1 pH accuracy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Hanna HI98107 pHep revolutionized pH testing by giving non-technical users an accurate, economical solution trusted by millions worldwide. Unlike disposable testers that must be discarded when the junction clogs, the pHep features a \u003cstrong\u003e2 cm renewable cloth junction\u003c\/strong\u003e that extends usable life significantly. With \u003cstrong\u003e±0.1 pH accuracy across 0.0 to 14.0 pH range\u003c\/strong\u003e and up to 700 hours of continuous operation on a single set of batteries, this tester delivers reliable results in labs, agriculture, aquaculture, food production, pools, and industrial quality control.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eKEY FEATURES\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWhat Makes the HI98107 pHep Different\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔄\u003c\/span\u003e\n\u003ch3\u003eRenewable Junction\u003c\/h3\u003e\n\u003cp\u003e2 cm cloth junction can be pulled out to expose fresh sections when contaminated, extending tester life far beyond typical disposable units\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔋\u003c\/span\u003e\n\u003ch3\u003e700-Hour Battery Life\u003c\/h3\u003e\n\u003cp\u003eFour 1.5V batteries provide approximately 700 hours of continuous use, delivering years of testing before replacement needed\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e⚙️\u003c\/span\u003e\n\u003ch3\u003eManual Calibration\u003c\/h3\u003e\n\u003cp\u003eSimple 1 or 2-point calibration using side-mounted trimmer, no complex menus or technical expertise required\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e📏\u003c\/span\u003e\n\u003ch3\u003e0.1 pH Resolution\u003c\/h3\u003e\n\u003cp\u003eMeasures 0.0 to 14.0 pH range with 0.1 pH resolution and ±0.1 pH accuracy for reliable field and lab results\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e💧\u003c\/span\u003e\n\u003ch3\u003eCompact \u0026amp; Portable\u003c\/h3\u003e\n\u003cp\u003eLightweight design at just 95 grams (3.4 oz) and 175 x 41 x 23 mm dimensions for easy field transport\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🌡️\u003c\/span\u003e\n\u003ch3\u003eWide Operating Range\u003c\/h3\u003e\n\u003cp\u003eFunctions reliably in 0 to 50°C (32 to 122°F) environments with up to 95% relative humidity\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWhere the HI98107 Excels\u003c\/h3\u003e\n\u003cp\u003eThe Hanna HI98107 pHep is widely used across laboratories, industrial water treatment, agriculture, fish farming and aquaculture, food manufacturing and QC, swimming pool maintenance, hydroponics, and printing operations. Its economical design and renewable junction make it ideal for environments where multiple users need routine pH monitoring without the cost and complexity of higher-end meters.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eTrusted by millions of users worldwide, the Hanna pHep HI98107 has set the standard for affordable, accurate pH testing since its introduction.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35472441082018,"sku":"HI98107","price":115.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi98107-phep-economical-ph-tester-108569.jpg?v=1759500928"},{"product_id":"hanna-hi7033l-84-µs-cm-conductivity-calibration-solution-500ml-bottle","title":"Hanna (HI7033L) 84 µS\/cm Conductivity Calibration Solution, 500mL Bottle","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n \u003cdiv class=\"ro-hero\"\u003e\n \u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n \u003ch2\u003eHI7033L 84 µS\/cm Conductivity Calibration Solution\u003c\/h2\u003e\n \u003cdiv class=\"ro-tagline\"\u003eFDA-compliant certified reference standard for precision meter calibration in laboratory and field applications\u003c\/div\u003e\n \u003cdiv class=\"ro-badges\"\u003e\n \u003cspan class=\"ro-badge\"\u003e84 µS\/cm at 25°C\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003eCertificate of Analysis\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003e500mL Bottle\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003eLight-Tight Storage\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-callout\"\u003e\n \u003cp\u003eThe Hanna HI7033L conductivity calibration solution ensures accurate and repeatable measurements from your EC meters and probes. Each 500mL bottle comes with a certificate of analysis and is packaged in an opaque, FDA-compliant container to maintain solution integrity during storage.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eTECHNICAL SPECIFICATIONS\u003c\/div\u003e\n \u003cdiv class=\"ro-title\"\u003eSolution Details\u003c\/div\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003ctr\u003e\n \u003ctd\u003eConductivity Value\u003c\/td\u003e\n \u003ctd\u003e84 µS\/cm (microsiemens per centimeter)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eReference Temperature\u003c\/td\u003e\n \u003ctd\u003e25°C (77°F)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVolume\u003c\/td\u003e\n \u003ctd\u003e500mL bottle\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCalibration Range\u003c\/td\u003e\n \u003ctd\u003eSuitable for meters up to 200 µS\/cm scale\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDocumentation\u003c\/td\u003e\n \u003ctd\u003eIncludes certificate of analysis\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eBottle Material\u003c\/td\u003e\n \u003ctd\u003eOpaque light-tight FDA-compliant material\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCalibration Time\u003c\/td\u003e\n \u003ctd\u003eComplete calibration in minutes\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"ro-section\"\u003e\n \u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n \u003cdiv class=\"ro-title\"\u003eMeter Applications\u003c\/div\u003e\n \u003cp\u003eThe HI7033L solution is designed for use with Hanna conductivity meters and probes, as well as most EC meters that require an 84 µS\/cm reference standard. Ideal for calibrating instruments used in laboratory water testing, aquarium monitoring, hydroponics, and field applications where low-range conductivity measurement accuracy is critical. The 500mL bottle size provides multiple calibrations while the opaque packaging prevents photodegradation of the solution over time.\u003c\/p\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35472680779938,"sku":"HI7033L","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi7033l-84-uscm-conductivity-calibration-solution-500ml-bottle-850558.jpg?v=1759500974"},{"product_id":"hanna-hi70300-m-electrode-storage-solution-ph-orp-0-23l","title":"Hanna (HI70300-M) Electrode Storage Solution PH-ORP 0.23L","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI70300-M Electrode Storage Solution is specifically formulated to keep pH and ORP electrode junctions moist and ready for accurate readings. This 0.23-liter bottle prevents sensor clogging and extends the operational life of your water quality testing equipment.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eTechnical Details\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHI70300-M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e0.23 Liters (230 mL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolution Type\u003c\/td\u003e\n\u003ctd\u003eElectrode Storage Solution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003epH and ORP Electrodes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eHanna Instruments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eMaintains electrode moisture and junction integrity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShelf Life\u003c\/td\u003e\n\u003ctd\u003eExtended when sealed and stored properly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eHow to Store Your Electrode\u003c\/h2\u003e\n\u003col class=\"install-steps\"\u003e\n\u003cli\u003eRemove the protective cap from your pH or ORP electrode\u003c\/li\u003e\n\u003cli\u003eAdd several drops of HI70300 storage solution into the electrode cap\u003c\/li\u003e\n\u003cli\u003eReplace the cap onto the electrode, ensuring the glass bulb and junction remain submerged in solution\u003c\/li\u003e\n\u003cli\u003eStore the electrode upright between uses to prevent solution evaporation\u003c\/li\u003e\n\u003cli\u003eReplenish storage solution as needed to keep the electrode continuously moist\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWorks With\u003c\/h2\u003e\n\u003cp\u003eThe Hanna HI70300-M storage solution is compatible with all Hanna pH and ORP electrodes, including portable and benchtop meter probes. It can also be used with most third-party electrodes that require proper hydration for storage. If storage solution is unavailable, pH 7.01 buffer solution may be used as an alternative, though dedicated storage solution is recommended for optimal electrode longevity and response time.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n🔧 Never store electrodes dry or in distilled water—both will damage the reference junction and cause slow, drifting readings. Keep a small dropper bottle of HI70300 in your testing kit for field electrode maintenance.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35473318084770,"sku":"HI70300-M","price":36.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5537238384802-padded.jpg?v=1777264963"},{"product_id":"hanna-hi70300l-electrode-storage-solution-ph-orp-0-46l","title":"Hanna (HI70300L) Electrode Storage Solution PH-ORP 0.46L","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\nThe Hanna HI70300L Electrode Storage Solution is formulated specifically to maintain optimal pH and ORP electrode performance between measurements. Proper electrode storage in this 0.46L solution prevents junction clogging and preserves the glass bulb's hydration, ensuring accurate readings and extended sensor life.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eHI70300L Technical Details\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eHI70300L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eHanna Instruments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e0.46 Liters (460 mL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolution Type\u003c\/td\u003e\n\u003ctd\u003eElectrode Storage Solution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Electrodes\u003c\/td\u003e\n\u003ctd\u003epH and ORP electrodes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eElectrode maintenance and storage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContainer Type\u003c\/td\u003e\n\u003ctd\u003eLaboratory-grade bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShelf Life\u003c\/td\u003e\n\u003ctd\u003eExtended when sealed and stored properly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eStorage Protocol\u003c\/h2\u003e\n\u003col class=\"install-steps\"\u003e\n\u003cli\u003eRemove the electrode from the meter or monitoring system after use and rinse the glass bulb gently with distilled water.\u003c\/li\u003e\n\u003cli\u003eAdd several drops of HI70300L storage solution into the protective cap until approximately one-quarter full.\u003c\/li\u003e\n\u003cli\u003eInsert the electrode into the cap, ensuring the glass bulb and junction are fully submerged in the solution, and store upright in a cool location.\u003c\/li\u003e\n\u003cli\u003eCheck solution level periodically and replenish as needed to maintain electrode hydration between measurements.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eElectrode Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe HI70300L storage solution is compatible with all Hanna pH and ORP electrodes, as well as most third-party glass bulb electrodes that require wet storage. This solution is specifically formulated to prevent the crystallization and microbial growth that can occur with distilled water storage, while maintaining the proper ionic strength at the electrode junction. Do not substitute with tap water, distilled water, or buffer solutions for long-term storage, as these alternatives can compromise electrode performance and shorten sensor lifespan.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n🔧 Never store pH or ORP electrodes dry or in distilled water. Keep a small bottle of HI70300L at each monitoring location and make it routine to refresh the storage solution in electrode caps monthly, even when electrodes are in regular use.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35473319166114,"sku":"HI70300L","price":45.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5537238614178-padded.jpg?v=1777264976"},{"product_id":"hanna-hi7007-m-ph-7-01-buffer-caliberation-solution-230-ml","title":"Hanna (HI7007-M) Ph 7.01 Buffer Caliberation Solution; 230 ML","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments Calibration Solution\u003c\/div\u003e\n\u003ch2\u003eHanna \u003cem\u003eHI7007-M pH 7.01 Buffer Calibration Solution\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003ePremium quality pH 7.01 reference standard for accurate meter calibration. 230 mL bottle with lot number traceability and tamper-proof seal.\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e5-Year Shelf Life\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003epH 7.01\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e230 mL\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWHY IT WORKS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003ePrecision calibration for reliable pH testing\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🎯\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003epH 7.01 Neutral Buffer\u003c\/h3\u003e\n\u003cp\u003eMid-point calibration standard essential for two-point and three-point pH meter calibration protocols.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🔒\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eTamper-Proof Seal\u003c\/h3\u003e\n\u003cp\u003eAir-tight bottle with safety seal ensures solution integrity from manufacture to first use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e📅\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003e5-Year Stability\u003c\/h3\u003e\n\u003cp\u003eSpecially formulated buffer maintains accuracy for five years from manufacture date when unopened.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🏷️\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003eLot Traceability\u003c\/h3\u003e\n\u003cp\u003eEach bottle clearly marked with lot number and expiration date for quality control documentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cdiv class=\"ro-feat-icon\"\u003e\u003cspan\u003e🧪\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3\u003ePremium Formulation\u003c\/h3\u003e\n\u003cp\u003eHanna's laboratory-grade buffers meet stringent quality standards for professional and scientific use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eWorks with all pH meters\u003c\/h3\u003e\n\u003cp\u003eThe HI7007-M is compatible with all Hanna pH meters and probes, as well as pH testing equipment from other manufacturers. Use alongside pH 4.01 and pH 10.01 buffers for three-point calibration, or combine with one other buffer for two-point calibration depending on your typical measurement range.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eMAINTENANCE\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eCalibration schedule recommendations\u003c\/h3\u003e\n\u003cdiv class=\"filter-schedule\"\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eDaily Use\u003c\/div\u003e\n\u003ch4\u003eWeekly Calibration\u003c\/h4\u003e\n\u003cp\u003eCalibrate pH meters weekly when performing daily measurements to maintain accuracy in critical applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003ePeriodic Use\u003c\/div\u003e\n\u003ch4\u003eBefore Each Session\u003c\/h4\u003e\n\u003cp\u003eCalibrate before each testing session if meter is used sporadically or has been stored for more than a week.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"schedule-card\"\u003e\n\u003cdiv class=\"interval\"\u003eAfter Opening\u003c\/div\u003e\n\u003ch4\u003eReplace Within 6 Months\u003c\/h4\u003e\n\u003cp\u003eOnce opened, replace calibration solution within six months to ensure buffer accuracy and prevent contamination.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"benefits-strip\"\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e✓\u003c\/div\u003e\n\u003ch4\u003eLaboratory Grade\u003c\/h4\u003e\n\u003cp\u003eProfessional quality buffer solution trusted in scientific and industrial applications\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e✓\u003c\/div\u003e\n\u003ch4\u003eQuality Assurance\u003c\/h4\u003e\n\u003cp\u003eTamper-proof seal and lot tracking for complete documentation and traceability\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e✓\u003c\/div\u003e\n\u003ch4\u003eLong Shelf Life\u003c\/h4\u003e\n\u003cp\u003eFive-year unopened stability reduces waste and inventory management hassle\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"benefit-item\"\u003e\n\u003cdiv class=\"bi-icon\"\u003e✓\u003c\/div\u003e\n\u003ch4\u003e230 mL Bottle\u003c\/h4\u003e\n\u003cp\u003eSufficient volume for multiple calibrations while maintaining solution freshness\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35473322508450,"sku":"HI7007-M","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi7007-m-ph-701-buffer-caliberation-solution-230-ml-552135.jpg?v=1759501042"},{"product_id":"hanna-hi7007-1l-ph-7-01-buffer-caliberation-solution-1l","title":"Hanna (HI7007-1L) Ph 7.01 Buffer Caliberation Solution; 1L","description":"\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\u003cstyle\u003e\n .ro-wrap {\n --deep:#0a1628;--ocean:#0f3460;--blue:#1565c0;--sky:#2196f3;--aqua:#4dd0e1;\n --white:#ffffff;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;\n --gold:#f59e0b;--radius:12px;\n font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;word-break:break-word;min-width:0;\n }\n .ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep) 0%,var(--ocean) 50%,#1a5276 100%);color:var(--white);padding:52px 40px 44px;position:relative;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}\n .ro-wrap .ro-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 55% at 95% 45%,rgba(77,208,225,.15) 0%,transparent 65%),radial-gradient(ellipse 40% 40% at 5% 80%,rgba(255,255,255,.05) 0%,transparent 60%);pointer-events:none;}\n .ro-wrap .ro-eyebrow{font-size:13px !important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:12px;}\n .ro-wrap .ro-hero h2{font-family:'DM Serif Display',serif;font-size:clamp(26px,4vw,40px) !important;line-height:1.15;font-weight:400;margin-bottom:16px;color:var(--white);}\n .ro-wrap .ro-hero h2 em{font-style:italic;color:var(--aqua);}\n .ro-wrap .ro-tagline{font-size:18px !important;color:rgba(255,255,255,.75);font-weight:300;margin-bottom:28px;}\n .ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px;}\n .ro-wrap .ro-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:var(--white);font-size:15px !important;font-weight:500;padding:6px 14px;border-radius:40px;backdrop-filter:blur(6px);}\n .ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px;}\n .ro-wrap .ro-callout p{font-size:18px !important;color:var(--text);line-height:1.7;margin:0;}\n .ro-wrap .ro-callout strong{color:var(--ocean);}\n .ro-wrap .ro-section{padding:36px 40px;border-bottom:1px solid var(--slate);}\n .ro-wrap .ro-label{font-size:13px !important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:8px;}\n .ro-wrap .ro-title{font-family:'DM Serif Display',serif;font-size:24px !important;color:var(--deep);margin-bottom:20px;font-weight:400;}\n .ro-wrap .stage-pipeline{display:flex;flex-direction:column;gap:0;margin-top:4px;}\n .ro-wrap .stage-row{display:flex;flex-direction:row;gap:12px;position:relative;min-width:0;align-items:flex-start;width:100%;box-sizing:border-box;}\n .ro-wrap .stage-row:not(:last-child) .stage-line{position:absolute;left:17px;top:40px;bottom:0;width:2px;background:var(--slate);}\n .ro-wrap .stage-num{width:36px;height:36px;min-width:36px;max-width:36px;border-radius:50%;background:linear-gradient(135deg,var(--ocean),var(--sky));color:white;display:flex;align-items:center;justify-content:center;font-size:16px !important;font-weight:700;flex:0 0 36px;position:relative;z-index:1;margin-top:16px;}\n .ro-wrap .stage-body{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px;flex:1 1 0;min-width:0;overflow:hidden;overflow-wrap:break-word;word-break:break-word;box-sizing:border-box;}\n .ro-wrap .stage-body h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:8px;margin-top:6px;}\n .ro-wrap .stage-tag{display:block;font-size:12px !important;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:var(--slate);color:var(--ocean);padding:3px 8px;border-radius:4px;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;line-height:1.5 !important;box-sizing:border-box;}\n .ro-wrap .stage-body p{font-size:18px !important;color:var(--muted);line-height:1.6;margin:0;display:block;}\n .ro-wrap .stage-body .stage-part{font-size:15px !important;color:var(--sky);margin-top:6px;font-weight:500;}\n .ro-wrap .specs-table{width:100%;border-collapse:collapse;font-size:18px !important;}\n .ro-wrap .specs-table tr{border-bottom:1px solid var(--slate);}\n .ro-wrap .specs-table tr:last-child{border-bottom:none;}\n .ro-wrap .specs-table td{padding:11px 6px;vertical-align:top;}\n .ro-wrap .specs-table td:first-child{font-weight:500;color:var(--deep);width:44%;padding-right:16px;}\n .ro-wrap .specs-table td:last-child{color:var(--muted);}\n .ro-wrap .specs-table tr:hover td{background:var(--offwhite);}\n .ro-wrap .conditions-table{width:100%;border-collapse:collapse;font-size:18px !important;margin-top:4px;}\n .ro-wrap .conditions-table th{background:var(--deep);color:var(--white);font-size:15px !important;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:10px 12px;text-align:left;}\n .ro-wrap .conditions-table th:first-child{border-radius:var(--radius) 0 0 0;}\n .ro-wrap .conditions-table th:last-child{border-radius:0 var(--radius) 0 0;}\n .ro-wrap .conditions-table td{padding:10px 12px;border-bottom:1px solid var(--slate);color:var(--text);}\n .ro-wrap .conditions-table tr:nth-child(even) td{background:var(--offwhite);}\n .ro-wrap .ro-feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(220px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .ro-feature-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:20px 18px;}\n .ro-wrap .ro-feat-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--ocean),var(--sky));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}\n .ro-wrap .ro-feature-card h3{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .ro-feature-card p{font-size:18px !important;color:var(--muted);line-height:1.55;margin:0;}\n .ro-wrap .pro-tip{display:block;background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin-top:20px;box-sizing:border-box;width:100% !important;}\n .ro-wrap .pro-tip-icon{font-size:22px !important;display:inline;margin-right:8px;line-height:1.6 !important;}\n .ro-wrap .pro-tip p{font-size:18px !important;color:#5a4500;line-height:1.6 !important;margin:0;display:block;width:100%;}\n .ro-wrap .pro-tip strong{color:#3d2e00;}\n .ro-wrap .install-steps{counter-reset:step;list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:14px;}\n .ro-wrap .install-steps li{counter-increment:step;display:flex;align-items:flex-start;gap:14px;font-size:18px !important;color:var(--text);}\n .ro-wrap .install-steps li::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--ocean);color:white;font-size:15px !important;font-weight:700;flex-shrink:0;margin-top:1px;}\n .ro-wrap .filter-schedule{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .schedule-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .schedule-card .interval{font-size:22px !important;font-family:'DM Serif Display',serif;color:var(--sky);font-weight:400;margin-bottom:4px;}\n .ro-wrap .schedule-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .schedule-card p{font-size:15px !important;color:var(--muted);margin:0;line-height:1.45;}\n .ro-wrap .benefits-strip{display:flex;flex-wrap:wrap;background:var(--deep);color:var(--white);border-radius:0 0 var(--radius) var(--radius);overflow:hidden;}\n .ro-wrap .benefit-item{flex:1 1 200px;padding:24px 22px;border-right:1px solid rgba(255,255,255,.1);}\n .ro-wrap .benefit-item:last-child{border-right:none;}\n .ro-wrap .bi-icon{font-size:22px !important;margin-bottom:10px;}\n .ro-wrap .benefit-item h4{font-size:15px !important;font-weight:600;color:var(--aqua);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em;}\n .ro-wrap .benefit-item p{font-size:15px !important;color:rgba(255,255,255,.65);line-height:1.55;margin:0;}\n .ro-wrap .faucet-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-top:4px;}\n .ro-wrap .faucet-card{border:2px solid var(--slate);border-radius:var(--radius);padding:18px;text-align:center;}\n .ro-wrap .faucet-icon{font-size:28px !important;margin-bottom:10px;}\n .ro-wrap .faucet-card h4{font-size:18px !important;font-weight:600;color:var(--deep);margin-bottom:6px;}\n .ro-wrap .faucet-card p{font-size:15px !important;color:var(--muted);line-height:1.5;margin:0;}\n .ro-wrap .spec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(180px,100%),1fr));gap:12px;margin-top:4px;}\n .ro-wrap .spec-card{background:var(--offwhite);border:1px solid var(--slate);border-radius:var(--radius);padding:16px;}\n .ro-wrap .spec-card .sc-label{font-size:13px !important;font-weight:700;letter-spacing:.08em;color:var(--sky);text-transform:uppercase;margin-bottom:4px;}\n .ro-wrap .spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;}\n .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);}\n @media(max-width:640px){\n .ro-wrap .ro-hero{padding:36px 24px 32px;}\n .ro-wrap .ro-section{padding:28px 20px;}\n .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;}\n .ro-wrap .benefits-strip{flex-direction:column;}\n .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);}\n }\n \/* ── Nuclear override — force all text inside ro-wrap to be readable ── *\/\n .ro-wrap p,\n .ro-wrap li,\n .ro-wrap td,\n .ro-wrap th,\n .ro-wrap .ro-section \u003e p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap .ro-section \u003e p,\n .ro-wrap .ro-callout p,\n .ro-wrap .stage-body p,\n .ro-wrap .ro-feature-card p,\n .ro-wrap .schedule-card p,\n .ro-wrap .faucet-card p,\n .ro-wrap .spec-card .sc-note,\n .ro-wrap .pro-tip p {\n font-size: 18px !important;\n line-height: 1.6 !important;\n }\n .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; }\n .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; }\n .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; }\n .ro-wrap .ro-label,\n .ro-wrap .stage-tag,\n .ro-wrap .sc-label { font-size: 14px !important; }\n .ro-wrap .ro-title { font-size: 24px !important; }\n .ro-wrap .interval { font-size: 22px !important; }\n .ro-wrap .stage-num { font-size: 16px !important; }\n .ro-wrap .ro-eyebrow { font-size: 14px !important; }\n .ro-wrap .ro-badge { font-size: 15px !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eHanna Instruments\u003c\/div\u003e\n\u003ch2\u003e\n\u003cem\u003eHI7007-1L\u003c\/em\u003e pH 7.01 Buffer Calibration Solution\u003c\/h2\u003e\n\u003cp class=\"ro-tagline\"\u003ePremium pH calibration buffer with 5-year shelf life and tamper-proof seal for accurate instrument calibration\u003c\/p\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ pH 7.01 certified\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Green-dyed identification\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 5-year unopened shelf life\u003c\/span\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ Lot tracked \u0026amp; dated\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThe Hanna HI7007-1L is a \u003cstrong\u003e1 liter pH 7.01 calibration buffer solution\u003c\/strong\u003e specifically formulated for accurate calibration of pH meters and electrodes. Color-coded green for easy identification, this solution comes with clearly marked lot numbers and expiration dates, sealed with a tamper-proof cap to guarantee solution integrity from manufacture to use.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eKEY FEATURES\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003ePrecision-Formulated Buffer Standard\u003c\/h3\u003e\n\u003cdiv class=\"ro-feature-grid\"\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🎯\u003c\/span\u003e\n\u003ch3\u003epH 7.01 Neutral Point\u003c\/h3\u003e\n\u003cp\u003eCertified buffer at 7.01 pH provides the critical neutral calibration point for accurate two or three-point meter calibration\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🟢\u003c\/span\u003e\n\u003ch3\u003eGreen Dye Identification\u003c\/h3\u003e\n\u003cp\u003eColor-coded solution prevents mix-ups during calibration procedures when using multiple buffer standards\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔒\u003c\/span\u003e\n\u003ch3\u003eTamper-Proof Seal\u003c\/h3\u003e\n\u003cp\u003eAir-tight cap with tamper-evident seal ensures buffer has not been compromised before first use\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e📅\u003c\/span\u003e\n\u003ch3\u003e5-Year Shelf Life\u003c\/h3\u003e\n\u003cp\u003eExtended expiration date clearly marked on label along with lot number for quality control and traceability\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e🔬\u003c\/span\u003e\n\u003ch3\u003ePremium Quality Formula\u003c\/h3\u003e\n\u003cp\u003eManufactured to strict standards for consistent accuracy across batches and reliable instrument calibration\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-feature-card\"\u003e\n\u003cspan class=\"ro-feat-icon\"\u003e💧\u003c\/span\u003e\n\u003ch3\u003e1 Liter Volume\u003c\/h3\u003e\n\u003cp\u003eGenerous size suitable for laboratory environments, water treatment facilities, and frequent calibration schedules\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eUniversal pH Meter Calibration\u003c\/h3\u003e\n\u003cp\u003eThe HI7007-1L is compatible with all Hanna Instruments pH meters and electrodes, as well as most other brands requiring pH 7.01 calibration buffers. Essential for aquarium monitoring, hydroponics systems, water quality testing, laboratory research, and reverse osmosis system monitoring. Use alongside pH 4.01 and pH 10.01 buffers for complete three-point calibration of meters. Suitable for field testing, municipal water testing, aquaculture operations, and any application requiring accurate pH measurement.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eHanna Instruments has been manufacturing precision water quality testing solutions for over 40 years, trusted by laboratories and water professionals worldwide.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":35473322999970,"sku":"HI7007\/L","price":79.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/hanna-hi7007-1l-ph-701-buffer-caliberation-solution-1l-837675.jpg?v=1759501042"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/collections\/hanna-test-cat.jpg?v=1596395351","url":"https:\/\/www.isopurewater.com\/collections\/hanna-water-quality-meters.oembed?page=4","provider":"Isopure Water","version":"1.0","type":"link"}