{"title":"RainSoft, Krystal Pure, Ameritek \u0026 Proline RO Replacement Filters","description":"\u003cp\u003eCompatible replacement filter kits and membranes for RainSoft, Krystal Pure, Ameritek and Proline Plus reverse osmosis systems. Find your system below.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRainSoft Ultrafiner II UF22:\u003c\/strong\u003e \u003ca href=\"\/products\/1-year-compatible-filter-kit-with-membrane-for-rainsoft-uf22-reverse-osmosis-system\"\u003e1-year filter kit with membrane\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRainSoft membranes:\u003c\/strong\u003e \u003ca href=\"\/products\/puret-tfcrs-1810-50-rainsoft-rs9-compatible-reverse-osmosis-tfc-membrane-50-gpd\"\u003eRS9-compatible 50 GPD membrane (also fits Sears and Kenmore)\u003c\/a\u003e · \u003ca href=\"\/products\/rainsoft-compatible-tfc-rs9-50-tfc-50-gpd-reverse-osmosis-membrane\"\u003eRainSoft-compatible TFC membrane\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKrystal Pure KR10 and KR15:\u003c\/strong\u003e \u003ca href=\"\/products\/complete-4-pack-replacement-filter-kit-for-krystal-pure-kr15-ro-system-includes-membrane-carbon-block-filters-polypropylene-sediment-filter\"\u003efilters and membrane combo\u003c\/a\u003e · \u003ca href=\"\/products\/universal-5-micron-ro-pre-filter-replacement-kit-2-carbon-blocks-1-sediment-filter-fits-ispring-rcc7ak-apec-roes-olympia-krystal-pure-kr10-kr15\"\u003epre-filter kit (2 carbon blocks + 1 sediment)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmeritek RO:\u003c\/strong\u003e \u003ca href=\"\/products\/compatible-water-filter-kit-for-ameritek-ro-water-treatment-system\"\u003estandard RO filter kit\u003c\/a\u003e · \u003ca href=\"\/products\/compatible-ameritek-alkaline-ro-system-replacement-water-filter-kit\"\u003ealkaline RO filter kit\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProline Plus RO:\u003c\/strong\u003e \u003ca href=\"\/products\/replacement-filter-kit-for-proline-plus-ro-water-filtration-system-1-year-supply-of-5-compatible-filters-includes-reverse-osmosis-membrane-carbon-block-filters-sediment-filter-and-gac-cartridge\"\u003e1-year kit (5 filters)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNot sure which kit fits your system? Call (714) 541-6600 with your model number.\u003c\/p\u003e\u003c!--ipwsys--\u003e\u003cp\u003e\u003cstrong\u003eStage-by-stage fit guides:\u003c\/strong\u003e \u003ca href=\"\/pages\/replacement-filters-rainsoft-uf22\"\u003eRainSoft Ultrafiner UF22\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-krystal-pure\"\u003eKrystal Pure KR10 \/ KR15\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-ameritek-ro-alkaline\"\u003eAmeritek RO \/ Alkaline RO\u003c\/a\u003e · \u003ca href=\"\/pages\/replacement-filters-proline-plus\"\u003eProline Plus\u003c\/a\u003e. See \u003ca href=\"\/pages\/replacement-filters-by-system\"\u003eall 154 systems\u003c\/a\u003e.\u003c\/p\u003e\u003c!--\/ipwsys--\u003e\u003cp\u003e\u003csmall\u003eCompatible aftermarket replacements. Isopure Water is not affiliated with RainSoft, Krystal Pure, Ameritek or Proline.\u003c\/small\u003e\u003c\/p\u003e","products":[{"product_id":"rainsoft-compatible-tfc-rs9-50-tfc-50-gpd-reverse-osmosis-membrane","title":"Good Water - Rainsoft Compatible TFC Reverse Osmosis Membrane","description":"\u003cp\u003e \u003c\/p\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 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.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\"\u003eThe Good Water TFC-RS9-50 delivers reliable up to 50 GPD reverse osmosis performance for Rainsoft, Sears, and Kenmore residential systems. This thin-film composite membrane strips out dissolved solids, heavy metals, and contaminants down to 0.0001 microns for consistently clean drinking water.\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eTFC-RS9 Membrane Details\u003c\/h2\u003e\n\u003ctable class=\"specs-table\" style=\"width: 99.9345%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.4352%;\"\u003eModel Number\u003c\/td\u003e\n\u003ctd style=\"width: 57.4804%;\"\u003eTFC-RS9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.4352%;\"\u003eDaily Production\u003c\/td\u003e\n\u003ctd style=\"width: 57.4804%;\"\u003e12, 22, 50 gallons per day (GPD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.4352%;\"\u003eMembrane Type\u003c\/td\u003e\n\u003ctd style=\"width: 57.4804%;\"\u003eThin-Film Composite (TFC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.4352%;\"\u003eFiltration Rating\u003c\/td\u003e\n\u003ctd style=\"width: 57.4804%;\"\u003e0.0001 microns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.4352%;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"width: 57.4804%;\"\u003e1.8\" diameter × 10\" length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.4352%;\"\u003eApplication\u003c\/td\u003e\n\u003ctd style=\"width: 57.4804%;\"\u003eResidential reverse osmosis systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.4352%;\"\u003eReplacement Interval\u003c\/td\u003e\n\u003ctd style=\"width: 57.4804%;\"\u003e24-36 months depending on water quality\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 42.4352%;\"\u003eOperating Pressure\u003c\/td\u003e\n\u003ctd style=\"width: 57.4804%;\"\u003e40-80 PSI recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eReplacing Your RO Membrane\u003c\/h2\u003e\n\u003col class=\"install-steps\"\u003e\n\u003cli\u003eShut off water supply to the RO system and open the faucet to relieve pressure\u003c\/li\u003e\n\u003cli\u003eRemove the membrane housing cap and slide out the old membrane, noting the direction of water flow arrows\u003c\/li\u003e\n\u003cli\u003eInsert the new TFC-RS9-50 membrane with flow arrows pointing toward the output side of the housing\u003c\/li\u003e\n\u003cli\u003eReassemble the housing, turn water supply back on, and flush the system for 30 minutes before use\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eSystem Fitment\u003c\/h2\u003e\n\u003cp\u003eThis Good Water membrane is engineered as a direct replacement for Rainsoft TFC reverse osmosis systems, including models using the RS9-50 specification. It also fits compatible Sears and Kenmore branded RO units that accept standard 1.8\" × 10\" TFC membranes. Verify your existing membrane dimensions before ordering to ensure proper fitment in your housing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pro-tip\"\u003e🔧 \u003cstrong\u003ePro tip:\u003c\/strong\u003e Replace your sediment and carbon pre-filters before installing a new membrane. Worn pre-filters force the membrane to handle contaminants it wasn't designed for, cutting its lifespan in half.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Rainsoft","offers":[{"title":"12 GPD","offer_id":35642470662306,"sku":"TFC-RS9-12","price":50.27,"currency_code":"USD","in_stock":true},{"title":"22 GPD","offer_id":35642470695074,"sku":"TFC-RS9-22","price":57.9,"currency_code":"USD","in_stock":true},{"title":"50 GPD","offer_id":35642470727842,"sku":"TFC-RS9-50","price":59.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/good-water-rainsoft-compatible-tfc-reverse-osmosis-membrane-457559.jpg?v=1791927021"},{"product_id":"universal-5-micron-ro-pre-filter-replacement-kit-2-carbon-blocks-1-sediment-filter-fits-ispring-rcc7ak-apec-roes-olympia-krystal-pure-kr10-kr15","title":"Universal 5-Micron RO Pre-Filter Replacement Kit — 2 Carbon Blocks + 1 Sediment Filter | Fits iSpring RCC7AK, APEC ROES, Olympia, Krystal Pure KR10 \u0026 KR15","description":"\u003c!-- ===========================================================\n IPW Industries - Universal RO Pre-Filter Replacement Kit\n Compatible with: iSpring RCC7AK, APEC, Olympia, Krystal Pure KR10 \u0026 KR15\n Body-only HTML embed for Shopify product page\n Scoped prefix: .uniropkit-\n Fonts: DM Serif Display (headings) + DM Sans (body)\n All font sizes pixel-anchored with !important to defeat theme cascade\n =========================================================== --\u003e\n\n\u003clink rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\"\u003e\n\u003clink rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin\u003e\n\u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Serif+Display:ital@0;1\u0026amp;family=DM+Sans:wght@300;400;500;600;700\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n\n\u003cstyle\u003e\n\/* ---------- Scoped reset \u0026 tokens ---------- *\/\n.uniropkit-wrap, .uniropkit-wrap *,\n.uniropkit-wrap *::before, .uniropkit-wrap *::after {\n box-sizing: border-box;\n}\n\n.uniropkit-wrap {\n --uniropkit-navy: #0a2540;\n --uniropkit-navy-deep: #061a30;\n --uniropkit-aqua: #1ea8c4;\n --uniropkit-aqua-soft: #e6f6fa;\n --uniropkit-ink: #1a2733;\n --uniropkit-muted: #5a6b7a;\n --uniropkit-line: #e3e8ee;\n --uniropkit-bg: #f5f8fb;\n --uniropkit-white: #ffffff;\n\n font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;\n color: var(--uniropkit-ink) !important;\n line-height: 1.6 !important;\n font-size: 17px !important;\n max-width: 1200px;\n margin: 40px auto;\n padding: 0 20px;\n}\n\n.uniropkit-wrap h2,\n.uniropkit-wrap h3 {\n font-family: 'DM Serif Display', Georgia, serif !important;\n color: var(--uniropkit-navy) !important;\n font-weight: 400 !important;\n letter-spacing: -0.01em !important;\n margin: 0 !important;\n}\n\n.uniropkit-wrap p {\n margin: 0 0 16px !important;\n color: var(--uniropkit-ink) !important;\n font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;\n font-size: 17px !important;\n line-height: 1.65 !important;\n}\n\n.uniropkit-wrap strong {\n font-weight: 600 !important;\n color: var(--uniropkit-navy) !important;\n}\n\n.uniropkit-wrap span,\n.uniropkit-wrap div,\n.uniropkit-wrap article,\n.uniropkit-wrap section,\n.uniropkit-wrap summary {\n font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;\n}\n\n\/* ---------- HERO ---------- *\/\n.uniropkit-wrap .uniropkit-hero,\n.uniropkit-wrap .uniropkit-hero * {\n color: #ffffff !important;\n}\n\n\/* Re-establish aqua accents inside hero (overrides white catch-all above) *\/\n.uniropkit-wrap .uniropkit-hero .uniropkit-eyebrow {\n color: #7fdbed !important;\n}\n.uniropkit-wrap .uniropkit-hero h2 em {\n color: #7fdbed !important;\n}\n.uniropkit-wrap .uniropkit-hero .uniropkit-stat-num {\n color: #7fdbed !important;\n}\n.uniropkit-wrap .uniropkit-hero .uniropkit-stat-label {\n color: 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#7fdbed !important;\n padding: 9px 16px !important;\n border: 1px solid rgba(127,219,237,0.55) !important;\n border-radius: 999px !important;\n margin-bottom: 24px !important;\n background: rgba(127,219,237,0.14) !important;\n font-family: 'DM Sans', sans-serif !important;\n line-height: 1.2 !important;\n}\n\n.uniropkit-hero h2 {\n color: #ffffff !important;\n font-size: 48px !important;\n line-height: 1.1 !important;\n margin: 0 0 20px !important;\n font-family: 'DM Serif Display', Georgia, serif !important;\n font-weight: 400 !important;\n letter-spacing: -0.02em !important;\n}\n\n.uniropkit-hero h2 em {\n font-style: italic !important;\n color: var(--uniropkit-aqua) !important;\n}\n\n.uniropkit-wrap .uniropkit-hero .uniropkit-hero-inner p.uniropkit-hero-sub,\n.uniropkit-wrap .uniropkit-hero p.uniropkit-hero-sub,\np.uniropkit-hero-sub {\n font-size: 19px !important;\n line-height: 1.65 !important;\n color: #ffffff !important;\n margin: 0 0 32px !important;\n max-width: 100% !important;\n font-family: 'DM Sans', sans-serif !important;\n font-weight: 400 !important;\n opacity: 1 !important;\n text-shadow: none !important;\n}\n\n.uniropkit-hero-sub {\n font-size: 19px !important;\n line-height: 1.65 !important;\n color: #ffffff !important;\n margin: 0 0 32px !important;\n max-width: 100% !important;\n font-family: 'DM Sans', sans-serif !important;\n font-weight: 400 !important;\n opacity: 1 !important;\n}\n\n.uniropkit-hero-stats {\n display: flex;\n flex-wrap: wrap;\n gap: 40px;\n margin-top: 8px;\n}\n\n.uniropkit-stat-num {\n font-family: 'DM Serif Display', Georgia, serif !important;\n font-size: 42px !important;\n line-height: 1 !important;\n color: var(--uniropkit-aqua) !important;\n display: block !important;\n margin-bottom: 8px !important;\n font-weight: 400 !important;\n}\n\n.uniropkit-stat-label {\n font-size: 13px !important;\n letter-spacing: 1.2px !important;\n text-transform: uppercase !important;\n color: #c9dde4 !important;\n font-weight: 600 !important;\n font-family: 'DM Sans', sans-serif !important;\n}\n\n\/* ---------- Section heading helper ---------- *\/\n.uniropkit-section {\n margin: 64px 0;\n}\n\n.uniropkit-section-head {\n text-align: center;\n margin-bottom: 40px;\n}\n\n.uniropkit-section-tag {\n display: inline-block !important;\n font-size: 12px !important;\n font-weight: 600 !important;\n letter-spacing: 2.5px !important;\n text-transform: uppercase !important;\n color: var(--uniropkit-aqua) !important;\n margin-bottom: 14px !important;\n font-family: 'DM Sans', sans-serif !important;\n line-height: 1.2 !important;\n}\n\n.uniropkit-section h2 {\n font-size: 36px !important;\n line-height: 1.2 !important;\n margin-bottom: 14px !important;\n letter-spacing: -0.01em !important;\n}\n\n.uniropkit-section-lede {\n font-size: 18px !important;\n color: var(--uniropkit-muted) !important;\n max-width: 680px !important;\n margin: 0 auto !important;\n line-height: 1.6 !important;\n font-family: 'DM Sans', sans-serif !important;\n}\n\n\/* ---------- COMPATIBILITY GRID ---------- *\/\n.uniropkit-compat-grid {\n display: grid;\n grid-template-columns: repeat(3, 1fr);\n gap: 16px;\n}\n\n.uniropkit-compat-card {\n background: var(--uniropkit-white);\n border: 1px solid var(--uniropkit-line);\n border-radius: 12px;\n padding: 24px;\n transition: border-color 0.2s ease, transform 0.2s ease;\n display: flex;\n flex-direction: column;\n gap: 8px;\n}\n\n.uniropkit-compat-card:hover {\n border-color: var(--uniropkit-aqua);\n transform: translateY(-2px);\n}\n\n.uniropkit-compat-brand {\n display: flex;\n align-items: center;\n gap: 10px;\n margin-bottom: 4px;\n}\n\n.uniropkit-compat-check {\n width: 22px;\n height: 22px;\n border-radius: 50%;\n background: var(--uniropkit-aqua);\n color: #ffffff;\n display: flex;\n align-items: center;\n justify-content: center;\n flex-shrink: 0;\n}\n\n.uniropkit-compat-card h3 {\n font-size: 20px !important;\n line-height: 1.25 !important;\n margin: 0 !important;\n}\n\n.uniropkit-compat-card-models {\n font-size: 15px !important;\n color: var(--uniropkit-muted) !important;\n margin: 0 !important;\n line-height: 1.55 !important;\n font-family: 'DM Sans', sans-serif !important;\n}\n\n.uniropkit-compat-universal {\n background: var(--uniropkit-navy) !important;\n border-color: var(--uniropkit-navy) !important;\n color: #ffffff !important;\n}\n\n.uniropkit-compat-universal h3 {\n color: #ffffff !important;\n font-weight: 500 !important;\n}\n\n.uniropkit-compat-universal .uniropkit-compat-card-models {\n color: #e8f4f8 !important;\n}\n\n.uniropkit-compat-universal .uniropkit-compat-check {\n background: var(--uniropkit-aqua) !important;\n color: #ffffff !important;\n}\n\n\/* ---------- WHAT'S IN THE BOX ---------- *\/\n.uniropkit-kit-grid {\n display: grid;\n grid-template-columns: repeat(2, 1fr);\n gap: 20px;\n}\n\n.uniropkit-kit-card {\n background: var(--uniropkit-white);\n border: 1px solid var(--uniropkit-line);\n border-radius: 14px;\n padding: 36px 32px;\n position: relative;\n transition: border-color 0.2s ease, transform 0.2s ease;\n}\n\n.uniropkit-kit-card:hover {\n border-color: var(--uniropkit-aqua);\n transform: translateY(-2px);\n}\n\n.uniropkit-kit-card-qty {\n position: absolute;\n top: 24px;\n right: 24px;\n width: 48px;\n height: 48px;\n border-radius: 50%;\n background: var(--uniropkit-navy);\n color: #ffffff !important;\n display: flex;\n align-items: center;\n justify-content: center;\n font-family: 'DM Serif Display', Georgia, serif !important;\n font-size: 20px !important;\n line-height: 1 !important;\n}\n\n.uniropkit-kit-icon {\n width: 60px;\n height: 60px;\n border-radius: 12px;\n background: var(--uniropkit-aqua-soft);\n display: flex;\n align-items: center;\n justify-content: center;\n margin-bottom: 22px;\n color: var(--uniropkit-aqua);\n}\n\n.uniropkit-kit-card h3 {\n font-size: 24px !important;\n margin-bottom: 10px !important;\n line-height: 1.3 !important;\n}\n\n.uniropkit-kit-card-code {\n font-family: 'DM Sans', monospace !important;\n font-size: 12px !important;\n letter-spacing: 1.2px !important;\n color: var(--uniropkit-aqua) !important;\n font-weight: 600 !important;\n text-transform: uppercase !important;\n margin-bottom: 14px !important;\n display: block !important;\n line-height: 1.2 !important;\n}\n\n.uniropkit-kit-card p {\n font-size: 16px !important;\n color: var(--uniropkit-muted) !important;\n margin: 0 !important;\n line-height: 1.6 !important;\n}\n\n\/* ---------- HOW IT WORKS \/ STAGE FLOW ---------- *\/\n.uniropkit-flow {\n background: var(--uniropkit-bg);\n border-radius: 18px;\n padding: 56px 40px;\n}\n\n.uniropkit-flow-stages {\n display: grid;\n grid-template-columns: 1fr auto 1fr auto 1fr;\n align-items: center;\n gap: 16px;\n margin-top: 36px;\n}\n\n.uniropkit-flow-step {\n background: var(--uniropkit-white);\n border: 1px solid var(--uniropkit-line);\n border-radius: 12px;\n padding: 28px 22px;\n text-align: center;\n}\n\n.uniropkit-flow-step-num {\n display: inline-block !important;\n font-family: 'DM Serif Display', Georgia, serif !important;\n font-size: 16px !important;\n color: var(--uniropkit-aqua) !important;\n margin-bottom: 10px !important;\n line-height: 1.2 !important;\n}\n\n.uniropkit-flow-step h3 {\n font-size: 18px !important;\n margin-bottom: 8px !important;\n line-height: 1.3 !important;\n}\n\n.uniropkit-flow-step p {\n font-size: 14px !important;\n color: var(--uniropkit-muted) !important;\n margin: 0 !important;\n line-height: 1.55 !important;\n}\n\n.uniropkit-flow-arrow {\n color: var(--uniropkit-aqua) !important;\n font-size: 24px !important;\n font-weight: 300 !important;\n line-height: 1 !important;\n}\n\n\/* ---------- BENEFITS GRID ---------- *\/\n.uniropkit-benefits {\n display: grid;\n grid-template-columns: repeat(3, 1fr);\n gap: 20px;\n}\n\n.uniropkit-benefit {\n padding: 32px 28px;\n background: var(--uniropkit-white);\n border: 1px solid var(--uniropkit-line);\n border-radius: 14px;\n}\n\n.uniropkit-benefit-icon {\n width: 52px;\n height: 52px;\n border-radius: 10px;\n background: var(--uniropkit-aqua-soft);\n color: var(--uniropkit-aqua);\n display: flex;\n align-items: center;\n justify-content: center;\n margin-bottom: 20px;\n}\n\n.uniropkit-benefit h3 {\n font-size: 21px !important;\n margin-bottom: 10px !important;\n line-height: 1.3 !important;\n}\n\n.uniropkit-benefit p {\n font-size: 16px !important;\n color: var(--uniropkit-muted) !important;\n margin: 0 !important;\n line-height: 1.6 !important;\n}\n\n\/* ---------- SPECS TABLE ---------- *\/\n.uniropkit-specs-wrap {\n background: var(--uniropkit-white);\n border: 1px solid var(--uniropkit-line);\n border-radius: 14px;\n overflow: hidden;\n}\n\n.uniropkit-specs-row {\n display: grid;\n grid-template-columns: 1fr 2fr;\n border-bottom: 1px solid var(--uniropkit-line);\n}\n\n.uniropkit-specs-row:last-child { border-bottom: none; }\n\n.uniropkit-specs-label,\n.uniropkit-specs-value {\n padding: 20px 26px !important;\n}\n\n.uniropkit-specs-label {\n background: var(--uniropkit-bg);\n font-weight: 600 !important;\n color: var(--uniropkit-navy) !important;\n font-size: 15px !important;\n letter-spacing: 0.3px !important;\n font-family: 'DM Sans', sans-serif !important;\n line-height: 1.5 !important;\n}\n\n.uniropkit-specs-value {\n font-size: 16px !important;\n color: var(--uniropkit-ink) !important;\n line-height: 1.6 !important;\n font-family: 'DM Sans', sans-serif !important;\n}\n\n\/* ---------- REPLACEMENT SCHEDULE ---------- *\/\n.uniropkit-wrap .uniropkit-schedule,\n.uniropkit-wrap .uniropkit-schedule * {\n color: #ffffff !important;\n}\n\n\/* Re-establish aqua accents inside schedule *\/\n.uniropkit-wrap .uniropkit-schedule .uniropkit-section-tag {\n color: #7fdbed !important;\n}\n.uniropkit-wrap .uniropkit-schedule .uniropkit-schedule-period {\n color: #7fdbed !important;\n}\n.uniropkit-wrap .uniropkit-schedule .uniropkit-schedule-lede {\n color: #eaf4f7 !important;\n}\n.uniropkit-wrap .uniropkit-schedule .uniropkit-schedule-card p {\n color: #d4e4ea !important;\n}\n\n.uniropkit-schedule {\n background: linear-gradient(135deg, var(--uniropkit-navy) 0%, var(--uniropkit-navy-deep) 100%);\n border-radius: 18px;\n padding: 56px 40px;\n color: #ffffff;\n text-align: center;\n}\n\n.uniropkit-schedule .uniropkit-section-tag {\n color: var(--uniropkit-aqua) !important;\n}\n\n.uniropkit-schedule h2 {\n color: #ffffff !important;\n margin-bottom: 14px !important;\n font-size: 36px !important;\n}\n\n.uniropkit-schedule-lede {\n color: #eaf4f7 !important;\n font-size: 18px !important;\n max-width: 620px !important;\n margin: 0 auto 40px !important;\n line-height: 1.65 !important;\n font-family: 'DM Sans', sans-serif !important;\n}\n\n.uniropkit-schedule-grid {\n display: grid;\n grid-template-columns: repeat(3, 1fr);\n gap: 20px;\n margin-top: 28px;\n}\n\n.uniropkit-schedule-card {\n background: rgba(255,255,255,0.06);\n border: 1px solid rgba(255,255,255,0.14);\n border-radius: 12px;\n padding: 32px 24px;\n text-align: left;\n}\n\n.uniropkit-schedule-period {\n font-family: 'DM Serif Display', Georgia, serif !important;\n font-size: 36px !important;\n color: var(--uniropkit-aqua) !important;\n line-height: 1 !important;\n margin-bottom: 12px !important;\n font-weight: 400 !important;\n display: block !important;\n}\n\n.uniropkit-schedule-card h3 {\n color: #ffffff !important;\n font-size: 18px !important;\n margin-bottom: 10px !important;\n line-height: 1.3 !important;\n}\n\n.uniropkit-schedule-card p {\n color: #d4e4ea !important;\n font-size: 15px !important;\n margin: 0 !important;\n line-height: 1.65 !important;\n}\n\n\/* ---------- FIT CHECK BOX ---------- *\/\n.uniropkit-fitcheck {\n background: var(--uniropkit-aqua-soft);\n border-left: 4px solid var(--uniropkit-aqua);\n border-radius: 0 12px 12px 0;\n padding: 32px;\n display: flex;\n gap: 22px;\n align-items: flex-start;\n}\n\n.uniropkit-fitcheck-icon {\n flex-shrink: 0;\n width: 48px;\n height: 48px;\n border-radius: 10px;\n background: var(--uniropkit-aqua);\n color: #ffffff;\n display: flex;\n align-items: center;\n justify-content: center;\n}\n\n.uniropkit-fitcheck h3 {\n font-size: 21px !important;\n margin-bottom: 8px !important;\n line-height: 1.3 !important;\n}\n\n.uniropkit-fitcheck p {\n margin: 0 !important;\n font-size: 16px !important;\n color: var(--uniropkit-ink) !important;\n line-height: 1.6 !important;\n}\n\n\/* ---------- FAQ ---------- *\/\n.uniropkit-faq {\n display: grid;\n gap: 12px;\n}\n\n.uniropkit-faq-item {\n background: var(--uniropkit-white);\n border: 1px solid var(--uniropkit-line);\n border-radius: 12px;\n overflow: hidden;\n}\n\n.uniropkit-faq-q {\n padding: 24px 28px !important;\n font-weight: 600 !important;\n color: var(--uniropkit-navy) !important;\n font-size: 17px !important;\n cursor: pointer;\n display: flex !important;\n justify-content: space-between;\n align-items: center;\n background: var(--uniropkit-white);\n list-style: none;\n user-select: none;\n font-family: 'DM Sans', sans-serif !important;\n line-height: 1.4 !important;\n}\n\n.uniropkit-faq-q::-webkit-details-marker { display: none; }\n\n.uniropkit-faq-q::after {\n content: \"+\";\n font-family: 'DM Serif Display', Georgia, serif;\n font-size: 28px;\n color: var(--uniropkit-aqua);\n line-height: 1;\n transition: transform 0.2s ease;\n margin-left: 16px;\n}\n\n.uniropkit-faq-item[open] .uniropkit-faq-q::after {\n content: \"−\";\n}\n\n.uniropkit-faq-a {\n padding: 0 28px 26px !important;\n color: var(--uniropkit-muted) !important;\n font-size: 16px !important;\n line-height: 1.7 !important;\n font-family: 'DM Sans', sans-serif !important;\n}\n\n\/* ---------- DISCLAIMER ---------- *\/\n.uniropkit-disclaimer {\n margin-top: 48px;\n padding: 26px 30px;\n background: var(--uniropkit-bg);\n border: 1px solid var(--uniropkit-line);\n border-radius: 12px;\n font-size: 14px !important;\n color: var(--uniropkit-muted) !important;\n line-height: 1.65 !important;\n font-family: 'DM Sans', sans-serif !important;\n}\n\n.uniropkit-disclaimer strong {\n color: var(--uniropkit-navy) !important;\n display: block !important;\n margin-bottom: 8px !important;\n font-size: 15px !important;\n}\n\n\/* ---------- RESPONSIVE ---------- *\/\n@media (max-width: 900px) {\n .uniropkit-wrap { font-size: 16px !important; }\n .uniropkit-hero { padding: 48px 28px; }\n .uniropkit-hero h2 { font-size: 34px !important; }\n .uniropkit-hero-sub { font-size: 17px !important; }\n .uniropkit-stat-num { font-size: 34px !important; }\n .uniropkit-section h2,\n .uniropkit-schedule h2 { font-size: 28px !important; }\n .uniropkit-section-lede { font-size: 16px !important; }\n .uniropkit-kit-grid { grid-template-columns: 1fr; }\n .uniropkit-kit-card h3 { font-size: 21px !important; }\n .uniropkit-benefits { grid-template-columns: 1fr; }\n .uniropkit-compat-grid { grid-template-columns: repeat(2, 1fr); }\n .uniropkit-flow-stages { grid-template-columns: 1fr; }\n .uniropkit-flow-arrow { transform: rotate(90deg); margin: 4px 0; }\n .uniropkit-schedule-grid { grid-template-columns: 1fr; }\n .uniropkit-schedule { padding: 40px 24px; }\n .uniropkit-flow { padding: 36px 22px; }\n .uniropkit-specs-row { grid-template-columns: 1fr; }\n .uniropkit-specs-label { padding-bottom: 6px !important; }\n .uniropkit-specs-value { padding-top: 6px !important; }\n .uniropkit-fitcheck { flex-direction: column; }\n}\n\n@media (max-width: 540px) {\n .uniropkit-wrap { font-size: 15px !important; padding: 0 16px; }\n .uniropkit-hero { padding: 40px 22px; }\n .uniropkit-hero h2 { font-size: 28px !important; }\n .uniropkit-hero-sub { font-size: 16px !important; }\n .uniropkit-hero-stats { gap: 24px; }\n .uniropkit-stat-num { font-size: 28px !important; }\n .uniropkit-stat-label { font-size: 12px !important; }\n .uniropkit-section h2,\n .uniropkit-schedule h2 { font-size: 24px !important; }\n .uniropkit-section-lede { font-size: 15px !important; }\n .uniropkit-kit-card { padding: 28px 24px; }\n .uniropkit-compat-grid { grid-template-columns: 1fr; }\n .uniropkit-section { margin: 44px 0; }\n .uniropkit-faq-q { font-size: 16px !important; padding: 20px 22px !important; }\n .uniropkit-faq-a { font-size: 15px !important; padding: 0 22px 22px !important; }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"uniropkit-wrap\"\u003e\n\n \u003c!-- ============== HERO ============== --\u003e\n \u003csection class=\"uniropkit-hero\"\u003e\n \u003cdiv class=\"uniropkit-hero-inner\"\u003e\n \u003cspan class=\"uniropkit-eyebrow\"\u003eUniversal 3-Pack Pre-Filter Kit · 10\" × 2.5\"\u003c\/span\u003e\n \u003ch2\u003eOne kit. \u003cem\u003eFive+ systems.\u003c\/em\u003e Pure water again.\u003c\/h2\u003e\n \u003cp class=\"uniropkit-hero-sub\"\u003eA universal pre-filter replacement set engineered to fit the most popular under-sink reverse osmosis systems — iSpring, APEC, Olympia, and Krystal Pure. Two coconut-shell carbon blocks and one 5-micron sediment filter. Same fit as OEM, smarter price.\u003c\/p\u003e\n \u003cdiv class=\"uniropkit-hero-stats\"\u003e\n \u003cdiv\u003e\n \u003cspan class=\"uniropkit-stat-num\"\u003e5+\u003c\/span\u003e\n \u003cspan class=\"uniropkit-stat-label\"\u003eSystems Supported\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv\u003e\n \u003cspan class=\"uniropkit-stat-num\"\u003e5μ\u003c\/span\u003e\n \u003cspan class=\"uniropkit-stat-label\"\u003eSediment Rating\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cdiv\u003e\n \u003cspan class=\"uniropkit-stat-num\"\u003e6 mo\u003c\/span\u003e\n \u003cspan class=\"uniropkit-stat-label\"\u003eService Life\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/section\u003e\n\n \u003c!-- ============== COMPATIBILITY GRID ============== --\u003e\n \u003csection class=\"uniropkit-section\"\u003e\n \u003cdiv class=\"uniropkit-section-head\"\u003e\n \u003cspan class=\"uniropkit-section-tag\"\u003eConfirmed Compatibility\u003c\/span\u003e\n \u003ch2\u003eBuilt to fit the systems you already own\u003c\/h2\u003e\n \u003cp class=\"uniropkit-section-lede\"\u003eStandard 10\" × 2.5\" slim-line cartridges drop directly into housings used by every major under-sink RO brand. No adapters, no modifications.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"uniropkit-compat-grid\"\u003e\n\n \u003cdiv class=\"uniropkit-compat-card\"\u003e\n \u003cdiv class=\"uniropkit-compat-brand\"\u003e\n \u003cdiv class=\"uniropkit-compat-check\" aria-hidden=\"true\"\u003e\n \u003csvg width=\"12\" height=\"12\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"3\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n \u003c\/div\u003e\n \u003ch3\u003eiSpring\u003c\/h3\u003e\n \u003c\/div\u003e\n \u003cp class=\"uniropkit-compat-card-models\"\u003eRCC7AK and other RCC-series systems using 10\" × 2.5\" pre-filters.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"uniropkit-compat-card\"\u003e\n \u003cdiv class=\"uniropkit-compat-brand\"\u003e\n \u003cdiv class=\"uniropkit-compat-check\" aria-hidden=\"true\"\u003e\n \u003csvg width=\"12\" height=\"12\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"3\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n \u003c\/div\u003e\n \u003ch3\u003eAPEC Water\u003c\/h3\u003e\n \u003c\/div\u003e\n \u003cp class=\"uniropkit-compat-card-models\"\u003eROES-50, ROES-PH75, RO-90, and other Essence and Ultimate series.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"uniropkit-compat-card\"\u003e\n \u003cdiv class=\"uniropkit-compat-brand\"\u003e\n \u003cdiv class=\"uniropkit-compat-check\" aria-hidden=\"true\"\u003e\n \u003csvg width=\"12\" height=\"12\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"3\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n \u003c\/div\u003e\n \u003ch3\u003eOlympia Water\u003c\/h3\u003e\n \u003c\/div\u003e\n \u003cp class=\"uniropkit-compat-card-models\"\u003eOROS-50 and other Olympia under-sink reverse osmosis systems.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"uniropkit-compat-card\"\u003e\n \u003cdiv class=\"uniropkit-compat-brand\"\u003e\n \u003cdiv class=\"uniropkit-compat-check\" aria-hidden=\"true\"\u003e\n \u003csvg width=\"12\" height=\"12\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"3\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n \u003c\/div\u003e\n \u003ch3\u003eKrystal Pure\u003c\/h3\u003e\n \u003c\/div\u003e\n \u003cp class=\"uniropkit-compat-card-models\"\u003eKR10 and KR15 reverse osmosis systems — stages 1, 2, and 3.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"uniropkit-compat-card\"\u003e\n \u003cdiv class=\"uniropkit-compat-brand\"\u003e\n \u003cdiv class=\"uniropkit-compat-check\" aria-hidden=\"true\"\u003e\n \u003csvg width=\"12\" height=\"12\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"3\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n \u003c\/div\u003e\n \u003ch3\u003eExpress Water\u003c\/h3\u003e\n \u003c\/div\u003e\n \u003cp class=\"uniropkit-compat-card-models\"\u003eStandard ROALK and RO5 series using 10\" × 2.5\" pre-filters.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"uniropkit-compat-card uniropkit-compat-universal\"\u003e\n \u003cdiv class=\"uniropkit-compat-brand\"\u003e\n \u003cdiv class=\"uniropkit-compat-check\" aria-hidden=\"true\"\u003e\n \u003csvg width=\"12\" height=\"12\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"3\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n \u003c\/div\u003e\n \u003ch3\u003e+ Universal\u003c\/h3\u003e\n \u003c\/div\u003e\n \u003cp class=\"uniropkit-compat-card-models\"\u003eAny under-sink RO system that uses standard 10\" × 2.5\" slim-line cartridges.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003c\/div\u003e\n \u003c\/section\u003e\n\n \u003c!-- ============== FIT CHECK ============== --\u003e\n \u003csection class=\"uniropkit-section\"\u003e\n \u003cdiv class=\"uniropkit-fitcheck\"\u003e\n \u003cdiv class=\"uniropkit-fitcheck-icon\" aria-hidden=\"true\"\u003e\n \u003csvg width=\"22\" height=\"22\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"9\"\u003e\u003c\/circle\u003e\u003cpath d=\"M12 8v4M12 16h.01\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n \u003c\/div\u003e\n \u003cdiv\u003e\n \u003ch3\u003eNot sure if these fit your system?\u003c\/h3\u003e\n \u003cp\u003ePull one of your current pre-filters and measure. If it's roughly \u003cstrong\u003e9.75–10 inches tall\u003c\/strong\u003e and \u003cstrong\u003e2.5 inches in diameter\u003c\/strong\u003e, this kit fits. Almost every residential under-sink RO system built in the last 20 years uses this standard slim-line size.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/section\u003e\n\n \u003c!-- ============== WHAT'S IN THE BOX ============== --\u003e\n \u003csection class=\"uniropkit-section\"\u003e\n \u003cdiv class=\"uniropkit-section-head\"\u003e\n \u003cspan class=\"uniropkit-section-tag\"\u003eWhat's Included\u003c\/span\u003e\n \u003ch2\u003eThree filters. One easy refresh.\u003c\/h2\u003e\n \u003cp class=\"uniropkit-section-lede\"\u003eReplaces the three pre-treatment stages found in nearly every residential RO system — the workhorses that protect your membrane and polish your drinking water.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"uniropkit-kit-grid\"\u003e\n\n \u003carticle class=\"uniropkit-kit-card\"\u003e\n \u003cdiv class=\"uniropkit-kit-card-qty\"\u003e×1\u003c\/div\u003e\n \u003cdiv class=\"uniropkit-kit-icon\" aria-hidden=\"true\"\u003e\n \u003csvg width=\"30\" height=\"30\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 6h18M6 12h12M9 18h6\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n \u003c\/div\u003e\n \u003cspan class=\"uniropkit-kit-card-code\"\u003eSC25-1005 · Sediment Stage\u003c\/span\u003e\n \u003ch3\u003e5-Micron Polypropylene Sediment Filter\u003c\/h3\u003e\n \u003cp\u003eCatches rust, sand, silt, and visible particles before they reach the carbon stages — the first line of defense that extends the life of every filter downstream.\u003c\/p\u003e\n \u003c\/article\u003e\n\n \u003carticle class=\"uniropkit-kit-card\"\u003e\n \u003cdiv class=\"uniropkit-kit-card-qty\"\u003e×2\u003c\/div\u003e\n \u003cdiv class=\"uniropkit-kit-icon\" aria-hidden=\"true\"\u003e\n \u003csvg width=\"30\" height=\"30\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"9\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"4\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\n \u003c\/div\u003e\n \u003cspan class=\"uniropkit-kit-card-code\"\u003eCBCO-10-5 · Carbon Stages\u003c\/span\u003e\n \u003ch3\u003eCoconut Shell Carbon Block Filters\u003c\/h3\u003e\n \u003cp\u003eTwo high-capacity 5-micron carbon blocks reduce chlorine taste and odor, organic compounds, and particulates — protecting your RO membrane and polishing the final product water.\u003c\/p\u003e\n \u003c\/article\u003e\n\n \u003c\/div\u003e\n \u003c\/section\u003e\n\n \u003c!-- ============== HOW IT WORKS ============== --\u003e\n \u003csection class=\"uniropkit-section\"\u003e\n \u003cdiv class=\"uniropkit-flow\"\u003e\n \u003cdiv class=\"uniropkit-section-head\"\u003e\n \u003cspan class=\"uniropkit-section-tag\"\u003eFiltration Stages\u003c\/span\u003e\n \u003ch2\u003eHow your RO system cleans water\u003c\/h2\u003e\n \u003cp class=\"uniropkit-section-lede\"\u003eThis kit handles the three pre-treatment stages — the filtration that prepares water before it ever reaches the RO membrane.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"uniropkit-flow-stages\"\u003e\n \u003cdiv class=\"uniropkit-flow-step\"\u003e\n \u003cspan class=\"uniropkit-flow-step-num\"\u003eStage 01\u003c\/span\u003e\n \u003ch3\u003eSediment\u003c\/h3\u003e\n \u003cp\u003e5-micron PP traps rust, silt, sand \u0026amp; debris.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"uniropkit-flow-arrow\" aria-hidden=\"true\"\u003e→\u003c\/div\u003e\n \u003cdiv class=\"uniropkit-flow-step\"\u003e\n \u003cspan class=\"uniropkit-flow-step-num\"\u003eStage 02\u003c\/span\u003e\n \u003ch3\u003eCarbon Block\u003c\/h3\u003e\n \u003cp\u003eCoconut carbon reduces chlorine taste \u0026amp; odor.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"uniropkit-flow-arrow\" aria-hidden=\"true\"\u003e→\u003c\/div\u003e\n \u003cdiv class=\"uniropkit-flow-step\"\u003e\n \u003cspan class=\"uniropkit-flow-step-num\"\u003eStage 03\u003c\/span\u003e\n \u003ch3\u003eCarbon Polish\u003c\/h3\u003e\n \u003cp\u003eSecond carbon stage protects the RO membrane.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/section\u003e\n\n \u003c!-- ============== BENEFITS ============== --\u003e\n \u003csection class=\"uniropkit-section\"\u003e\n \u003cdiv class=\"uniropkit-section-head\"\u003e\n \u003cspan class=\"uniropkit-section-tag\"\u003eWhy Replace On Schedule\u003c\/span\u003e\n \u003ch2\u003eBetter water. Longer membrane life.\u003c\/h2\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"uniropkit-benefits\"\u003e\n \u003cdiv class=\"uniropkit-benefit\"\u003e\n \u003cdiv class=\"uniropkit-benefit-icon\" aria-hidden=\"true\"\u003e\n \u003csvg width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 2L6 7v6c0 5 3 8 6 9 3-1 6-4 6-9V7l-6-5z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n \u003c\/div\u003e\n \u003ch3\u003eProtects the RO Membrane\u003c\/h3\u003e\n \u003cp\u003eChlorine destroys thin-film composite membranes. Fresh carbon blocks remove it before it ever reaches the membrane stage — significantly extending its service life.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"uniropkit-benefit\"\u003e\n \u003cdiv class=\"uniropkit-benefit-icon\" aria-hidden=\"true\"\u003e\n \u003csvg width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"9\"\u003e\u003c\/circle\u003e\u003cpath d=\"M8 14s1.5 2 4 2 4-2 4-2M9 9h.01M15 9h.01\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n \u003c\/div\u003e\n \u003ch3\u003eCrisp, Clean Taste\u003c\/h3\u003e\n \u003cp\u003eReduces chlorine, organics, and the off-flavors that make tap water unpleasant — without stripping the beneficial minerals you actually want to keep.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"uniropkit-benefit\"\u003e\n \u003cdiv class=\"uniropkit-benefit-icon\" aria-hidden=\"true\"\u003e\n \u003csvg width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M3 12c0-5 4-9 9-9 4 0 7 2 8 6M21 12c0 5-4 9-9 9-4 0-7-2-8-6\"\u003e\u003c\/path\u003e\u003cpolyline points=\"21 3 21 9 15 9\"\u003e\u003c\/polyline\u003e\u003cpolyline points=\"3 21 3 15 9 15\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n \u003c\/div\u003e\n \u003ch3\u003eBetter for the Planet\u003c\/h3\u003e\n \u003cp\u003eOne filter change replaces hundreds of single-use plastic bottles. Lower waste, lower cost per gallon, no more grocery-store water runs.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/section\u003e\n\n \u003c!-- ============== SPECS ============== --\u003e\n \u003csection class=\"uniropkit-section\"\u003e\n \u003cdiv class=\"uniropkit-section-head\"\u003e\n \u003cspan class=\"uniropkit-section-tag\"\u003eSpecifications\u003c\/span\u003e\n \u003ch2\u003eThe details, on paper\u003c\/h2\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"uniropkit-specs-wrap\"\u003e\n \u003cdiv class=\"uniropkit-specs-row\"\u003e\n \u003cdiv class=\"uniropkit-specs-label\"\u003eKit Contents\u003c\/div\u003e\n \u003cdiv class=\"uniropkit-specs-value\"\u003e(2) Coconut Shell Carbon Block Filters · (1) Polypropylene Sediment Filter\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"uniropkit-specs-row\"\u003e\n \u003cdiv class=\"uniropkit-specs-label\"\u003eProduct Codes\u003c\/div\u003e\n \u003cdiv class=\"uniropkit-specs-value\"\u003eCBCO-10-5 (carbon) · SC25-1005 (sediment)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"uniropkit-specs-row\"\u003e\n \u003cdiv class=\"uniropkit-specs-label\"\u003eCartridge Size\u003c\/div\u003e\n \u003cdiv class=\"uniropkit-specs-value\"\u003eStandard 10\" × 2.5\" slim-line\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"uniropkit-specs-row\"\u003e\n \u003cdiv class=\"uniropkit-specs-label\"\u003eMicron Rating\u003c\/div\u003e\n \u003cdiv class=\"uniropkit-specs-value\"\u003e5 micron (both sediment and carbon block)\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"uniropkit-specs-row\"\u003e\n \u003cdiv class=\"uniropkit-specs-label\"\u003eCarbon Media\u003c\/div\u003e\n \u003cdiv class=\"uniropkit-specs-value\"\u003eCoconut shell activated carbon block\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"uniropkit-specs-row\"\u003e\n \u003cdiv class=\"uniropkit-specs-label\"\u003eCompatible Systems\u003c\/div\u003e\n \u003cdiv class=\"uniropkit-specs-value\"\u003eiSpring RCC7AK · APEC ROES-50, ROES-PH75, RO-90 · Olympia OROS-50 · Krystal Pure KR10 \u0026amp; KR15 · Express Water ROALK\/RO5 · plus any RO system using standard 10\" × 2.5\" cartridges\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"uniropkit-specs-row\"\u003e\n \u003cdiv class=\"uniropkit-specs-label\"\u003eService Life\u003c\/div\u003e\n \u003cdiv class=\"uniropkit-specs-value\"\u003e6 months under typical residential use\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"uniropkit-specs-row\"\u003e\n \u003cdiv class=\"uniropkit-specs-label\"\u003eBrand\u003c\/div\u003e\n \u003cdiv class=\"uniropkit-specs-value\"\u003eIPW Industries Inc. — universal replacement, not OEM\u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/section\u003e\n\n \u003c!-- ============== REPLACEMENT SCHEDULE ============== --\u003e\n \u003csection class=\"uniropkit-section\"\u003e\n \u003cdiv class=\"uniropkit-schedule\"\u003e\n \u003cspan class=\"uniropkit-section-tag\"\u003eMaintenance Made Simple\u003c\/span\u003e\n \u003ch2\u003eYour RO replacement schedule\u003c\/h2\u003e\n \u003cp class=\"uniropkit-schedule-lede\"\u003eMost under-sink reverse osmosis systems follow the same maintenance rhythm. Here's what your system needs — and when.\u003c\/p\u003e\n\n \u003cdiv class=\"uniropkit-schedule-grid\"\u003e\n \u003cdiv class=\"uniropkit-schedule-card\"\u003e\n \u003cspan class=\"uniropkit-schedule-period\"\u003e6 mo\u003c\/span\u003e\n \u003ch3\u003ePre-Filters (This Kit)\u003c\/h3\u003e\n \u003cp\u003eSediment and carbon block pre-treatment. Replace twice a year, or sooner if you notice slower flow or off-tastes returning.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"uniropkit-schedule-card\"\u003e\n \u003cspan class=\"uniropkit-schedule-period\"\u003e2 yr\u003c\/span\u003e\n \u003ch3\u003eRO Membrane\u003c\/h3\u003e\n \u003cp\u003eThe heart of the system. With diligent pre-filter changes, your membrane should last 2 to 3 years of household use.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"uniropkit-schedule-card\"\u003e\n \u003cspan class=\"uniropkit-schedule-period\"\u003e12 mo\u003c\/span\u003e\n \u003ch3\u003ePost-Carbon Polish\u003c\/h3\u003e\n \u003cp\u003eThe final touch before water reaches your faucet. Annual replacement keeps every glass tasting fresh.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/section\u003e\n\n \u003c!-- ============== FAQ ============== --\u003e\n \u003csection class=\"uniropkit-section\"\u003e\n \u003cdiv class=\"uniropkit-section-head\"\u003e\n \u003cspan class=\"uniropkit-section-tag\"\u003eCommon Questions\u003c\/span\u003e\n \u003ch2\u003eGood to know before you install\u003c\/h2\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"uniropkit-faq\"\u003e\n\n \u003cdetails class=\"uniropkit-faq-item\"\u003e\n \u003csummary class=\"uniropkit-faq-q\"\u003eHow do I know if my system uses 10\" × 2.5\" filters?\u003c\/summary\u003e\n \u003cdiv class=\"uniropkit-faq-a\"\u003e\n Pull one of your current pre-filters out and measure it. If it's approximately 9.75–10 inches tall and 2.5 inches in diameter (the slim-line standard), this kit fits. Virtually every residential under-sink RO system — iSpring, APEC, Olympia, Krystal Pure, Express Water, Home Master, and many private-label brands — uses this exact size. If you measure something significantly different, contact us with your system's model number before ordering.\n \u003c\/div\u003e\n \u003c\/details\u003e\n\n \u003cdetails class=\"uniropkit-faq-item\"\u003e\n \u003csummary class=\"uniropkit-faq-q\"\u003eAre these official iSpring, APEC, Olympia, or Krystal Pure replacements?\u003c\/summary\u003e\n \u003cdiv class=\"uniropkit-faq-a\"\u003e\n No — these are IPW Industries Inc. brand universal replacement cartridges engineered to fit the same housings used by those systems. We're not affiliated with any of those OEM brands, and our parts aren't covered by their warranties. Brand names are referenced strictly to identify compatibility. The benefit: same fit, same standards, smarter price.\n \u003c\/div\u003e\n \u003c\/details\u003e\n\n \u003cdetails class=\"uniropkit-faq-item\"\u003e\n \u003csummary class=\"uniropkit-faq-q\"\u003eDoes this kit include the RO membrane?\u003c\/summary\u003e\n \u003cdiv class=\"uniropkit-faq-a\"\u003e\n No — this kit covers the three pre-filter stages only (sediment and two carbon blocks). The RO membrane is replaced separately, typically every 2 to 3 years. If you also need a membrane, look for our complete combo kits that bundle pre-filters and membrane together.\n \u003c\/div\u003e\n \u003c\/details\u003e\n\n \u003cdetails class=\"uniropkit-faq-item\"\u003e\n \u003csummary class=\"uniropkit-faq-q\"\u003eHow do I know which filter goes in which housing?\u003c\/summary\u003e\n \u003cdiv class=\"uniropkit-faq-a\"\u003e\n The white polypropylene sediment filter goes in the first stage (the housing water enters first — usually furthest from the membrane). The two charcoal-grey carbon block filters fill stages 2 and 3. Always sanitize your hands and the housings during a change, lubricate the o-rings, and flush a few gallons through the system before drinking. Check your system's manual if you're unsure of the housing order.\n \u003c\/div\u003e\n \u003c\/details\u003e\n\n \u003cdetails class=\"uniropkit-faq-item\"\u003e\n \u003csummary class=\"uniropkit-faq-q\"\u003eWill these filters remove chloramines?\u003c\/summary\u003e\n \u003cdiv class=\"uniropkit-faq-a\"\u003e\n Standard coconut-shell carbon block reduces free chlorine taste and odor very effectively, but it is not optimized for chloramine removal. If your municipal water is treated with chloramines, a dedicated catalytic carbon filter is the better choice. Contact us if you're not sure what your utility uses and we can help you find the right cartridge.\n \u003c\/div\u003e\n \u003c\/details\u003e\n\n \u003cdetails class=\"uniropkit-faq-item\"\u003e\n \u003csummary class=\"uniropkit-faq-q\"\u003eHow often should I really change these?\u003c\/summary\u003e\n \u003cdiv class=\"uniropkit-faq-a\"\u003e\n Every 6 months is the standard recommendation for typical residential use. If you're on well water, have high sediment, or use a lot of water, you may need to change them sooner. Slower flow at the faucet or a return of chlorine taste are both clear signs it's time.\n \u003c\/div\u003e\n \u003c\/details\u003e\n\n \u003c\/div\u003e\n \u003c\/section\u003e\n\n \u003c!-- ============== DISCLAIMER ============== --\u003e\n \u003cdiv class=\"uniropkit-disclaimer\"\u003e\n \u003cstrong\u003eCompatibility Notice\u003c\/strong\u003e\n This is an IPW Industries Inc. brand universal replacement part — not an OEM product. It is not affiliated with, sponsored by, or warranted by iSpring, APEC Water, Olympia Water Systems, Krystal Pure, Express Water, or any other original equipment manufacturer. All mentions of brand names and model descriptions are made strictly to illustrate compatibility. iSpring, APEC, Olympia, Krystal Pure, Express Water, and all other brand names and logos are registered trademarks of their respective owners.\n \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"IPW Industries Inc","offers":[{"title":"Default Title","offer_id":35475068354722,"sku":"(2) CBCO-10-5 (1) SC25-1005","price":21.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/kr15.jpg?v=1779081021"},{"product_id":"puret-tfcrs-1810-50-rainsoft-rs9-compatible-reverse-osmosis-tfc-membrane-50-gpd","title":"PureT - RS9 -Compatible Rainsoft, Sears, and Kenmore TFC Reverse Osmosis Membrane 50 GPD","description":"\u003cp\u003e \u003c\/p\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 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!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\"\u003ePureT RS9 Replacement Membrane\u003c\/div\u003e\n\u003ch2\u003e50 GPD TFC Reverse Osmosis Membrane for Rainsoft, Sears, and Kenmore Systems\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003eDirect replacement for RS9 membrane cartridges in residential thin-film composite RO systems\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e50 GPD Output\u003c\/span\u003e \u003cspan class=\"ro-badge\"\u003e10\" x 1.8\" Standard\u003c\/span\u003e \u003cspan class=\"ro-badge\"\u003eTFC Technology\u003c\/span\u003e \u003cspan class=\"ro-badge\"\u003eRS9 Compatible\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-callout\"\u003e\n\u003cp\u003eThis PureT thin-film composite membrane is engineered as a direct replacement for the RS9 cartridge used in Rainsoft, Sears, and Kenmore reverse osmosis systems. The 50 gallon-per-day rated membrane fits standard 10-inch housings and removes dissolved solids, heavy metals, and contaminants down to 0.0001 microns through semi-permeable TFC film technology.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eHOW IT WORKS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eThin-Film Composite Separation\u003c\/h2\u003e\n\u003cdiv class=\"stage-pipeline\"\u003e\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e1\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003ePRESSURE\u003c\/span\u003e\n\u003ch3\u003eFeed Water Enters\u003c\/h3\u003e\n\u003cp\u003ePre-filtered water enters the membrane housing under system pressure, typically 40-80 PSI, forcing molecules against the TFC barrier layer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e2\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003eSEPARATION\u003c\/span\u003e\n\u003ch3\u003eSelective Filtration\u003c\/h3\u003e\n\u003cp\u003eThe thin-film composite layer allows only pure water molecules to pass through while rejecting dissolved solids, salts, heavy metals, nitrates, and organic compounds at 0.0001 micron level.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"stage-row\"\u003e\n\u003cdiv class=\"stage-line\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"stage-num\"\u003e3\u003c\/div\u003e\n\u003cdiv class=\"stage-body\"\u003e\n\u003cspan class=\"stage-tag\"\u003eOUTPUT\u003c\/span\u003e\n\u003ch3\u003ePermeate and Reject\u003c\/h3\u003e\n\u003cp\u003ePurified water exits to the storage tank at approximately 50 gallons per day while concentrated waste water flushes contaminants to drain, maintaining membrane surface integrity.\u003c\/p\u003e\n\u003cspan class=\"stage-part\"\u003eReplace every 24-36 months\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\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\u003eThis membrane is designed for Rainsoft reverse osmosis systems using the RS9 membrane cartridge, as well as compatible Sears and Kenmore models with 10-inch membrane housings. The 1.8-inch diameter fits standard residential TFC membrane housings. Verify your existing membrane dimensions before ordering. Best performance requires sediment and carbon pre-filtration, minimum 40 PSI feed pressure, and water temperatures between 40-100°F. Total dissolved solids rejection rate typically exceeds 95 percent with proper system maintenance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"PureT","offers":[{"title":"Default Title","offer_id":35475238027426,"sku":"TFCRS-1810-50","price":34.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-5537767424162-padded.jpg?v=1777268883"},{"product_id":"1-year-compatible-filter-kit-with-membrane-for-rainsoft-uf22-reverse-osmosis-system","title":"1-Year Compatible Filter Kit with Membrane for RainSoft Ultrafiner II UF22 Reverse Osmosis System","description":"\u003cp\u003e \u003c\/p\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 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!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\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\u003cdiv class=\"ro-callout\"\u003eThis complete 1-year filter replacement kit includes a sediment pre-filter, 50 GPD TFC RO membrane, and carbon block post-filter engineered to maintain peak performance in your RainSoft Ultrafiner II UF22 reverse osmosis system. Each component is precision-manufactured to meet OEM specifications for the RainSoft 21179 and UF22 models, ensuring reliable contaminant reduction and consistent water quality.\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWhat's Included in This Kit\u003c\/h2\u003e\n\u003cdiv class=\"spec-cards\"\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eStage 1 Pre-Filter\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e5 Micron Carbon Block\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eRemoves sediment, chlorine, taste and odor\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eStage 2 Membrane\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eTFC 50 GPD\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eRejects dissolved solids, heavy metals, fluoride\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eStage 3 Post-Filter\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e5 Micron Carbon Block\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eFinal polishing for taste and clarity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eService Life\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e12 Months\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eMembrane rated for 24 months under normal conditions\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eTotal Components\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003e3 Filters\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003e2 carbon blocks + 1 RO membrane\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-card\"\u003e\n\u003cdiv class=\"sc-label\"\u003eCompatibility\u003c\/div\u003e\n\u003cdiv class=\"sc-value\"\u003eRainSoft UF22\u003c\/div\u003e\n\u003cdiv class=\"sc-note\"\u003eDirect fit for 21179 and Ultrafiner II systems\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eTECHNICAL DETAILS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eFilter Kit Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMembrane Type\u003c\/td\u003e\n\u003ctd\u003eThin Film Composite (TFC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMembrane Production Rate\u003c\/td\u003e\n\u003ctd\u003e50 gallons per day (GPD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarbon Block Filtration\u003c\/td\u003e\n\u003ctd\u003e5 micron nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplacement Interval\u003c\/td\u003e\n\u003ctd\u003eCarbon filters: 12 months \/ Membrane: 24 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Models\u003c\/td\u003e\n\u003ctd\u003eRainSoft Ultrafiner II UF22, RainSoft 21179\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Contents\u003c\/td\u003e\n\u003ctd\u003e2 carbon block filters, 1 TFC RO membrane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Conditions\u003c\/td\u003e\n\u003ctd\u003eService life varies with feed water quality and usage volume\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eCOMPATIBILITY \u0026amp; APPLICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eSystem Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis filter kit is engineered as a direct replacement for RainSoft Ultrafiner II UF22 and RainSoft 21179 reverse osmosis systems. All filters are dimensioned and constructed to OEM specifications, ensuring proper flow rates, housing fit, and filtration performance. The 50 GPD TFC membrane provides efficient rejection of total dissolved solids, heavy metals, nitrates, and fluoride, while the dual carbon block filters protect the membrane and polish final output water. Suitable for residential point-of-use applications where consistent, high-quality drinking water is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pro-tip\"\u003e💧 \u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e Replace carbon filters annually even if water tastes fine. Chlorine breakthrough damages RO membranes long before you notice flavor changes, and a $30 carbon filter protects a $60 membrane. Track your installation date.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Isopure Water","offers":[{"title":"Default Title","offer_id":37630035722411,"sku":"(2) CB (1) RS9","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-6094670397611-padded.jpg?v=1777247193"},{"product_id":"replacement-filter-kit-for-proline-plus-ro-water-filtration-system-1-year-supply-of-5-compatible-filters-includes-reverse-osmosis-membrane-carbon-block-filters-sediment-filter-and-gac-cartridge","title":"1-Year Filter Replacement Kit for Proline Plus RO Water System (5 Filters)","description":"\u003cp\u003e \u003c\/p\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 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!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 span,\n .ro-wrap div {\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\"\u003eThis complete 1-year replacement kit delivers five essential filters engineered to maintain peak performance in your Proline Plus reverse osmosis system. Each component—from the 5-micron sediment pre-filter to the inline GAC polishing filter—works together to remove contaminants, improve taste, and extend membrane life through twelve months of continuous filtration.\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eWhat's Included in This Annual Replacement Kit\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStage 1 Pre-Filter\u003c\/td\u003e\n\u003ctd\u003e2.5\" × 10\" 5-Micron Polyspun Sediment Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStage 2 Pre-Filter\u003c\/td\u003e\n\u003ctd\u003eOmnipure OMB934-5M 5-Micron Carbon Block (2.5\" × 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStage 3 Pre-Filter\u003c\/td\u003e\n\u003ctd\u003eOmnipure OMB934-5M 5-Micron Carbon Block (2.5\" × 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStage 4 Membrane\u003c\/td\u003e\n\u003ctd\u003eFilmtec 50 GPD TLC Reverse Osmosis Membrane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStage 5 Post-Filter\u003c\/td\u003e\n\u003ctd\u003eOmnipure CL10ROT33-BB 5-Micron Inline Carbon GAC (2\" × 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplacement Schedule\u003c\/td\u003e\n\u003ctd\u003eFilters: 12 months \/ Membrane: 24 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible System\u003c\/td\u003e\n\u003ctd\u003eProline Plus Reverse Osmosis Water System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eFDA food-contact compliant materials\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eINSTALLATION \u0026amp; USE\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eAnnual Filter Replacement Process\u003c\/h2\u003e\n\u003col class=\"install-steps\"\u003e\n\u003cli\u003eShut off the water supply to your Proline Plus RO system and open the faucet to relieve pressure\u003c\/li\u003e\n\u003cli\u003eRemove the pre-filter housings and replace Stages 1-3 (sediment and carbon block filters), then hand-tighten housings back in place\u003c\/li\u003e\n\u003cli\u003eUnscrew the Stage 5 inline GAC filter, install the new Omnipure CL10ROT33-BB post-filter, and reconnect tubing\u003c\/li\u003e\n\u003cli\u003eReplace the Stage 4 Filmtec RO membrane only if you've reached the 24-month interval or notice a significant drop in TDS rejection\u003c\/li\u003e\n\u003cli\u003eTurn water supply back on, check for leaks, and flush the system for 10 minutes before use\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\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\u003eThis 5-filter replacement kit is designed specifically for the Isopure Water Proline Plus RO System. The included Omnipure OMB934-5M carbon blocks, polyspun sediment filter, Axeon 50 GPD membrane, and Omnipure CL10ROT33-BB inline GAC filter match the original specifications for reliable annual maintenance. Verify your system model before ordering to ensure proper fit in standard 10-inch housings and push-connect post-filter configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pro-tip\"\u003e🔧\u003cstrong style=\"display: inline !important;\"\u003e\u003cbr\u003e\u003c\/strong\u003e Mark your calendar for next year's replacement date and order your kit two weeks early—that way you're never caught with expired filters. If you notice a drop in water pressure or taste before the 12-month mark, check the sediment pre-filter first, as heavy sediment loads can clog it faster than expected.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Isopure Water","offers":[{"title":"Default Title","offer_id":37752352243883,"sku":"(1) SED (2) OMB934-MAX5 (1) Filmtec-50 (1)CL10ROT33-B","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-6128780083371-padded.jpg?v=1777247204"},{"product_id":"compatible-water-filter-kit-for-ameritek-ro-water-treatment-system","title":"Compatible filters for the Ameritek RO System Replacement Water Filter Kit","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 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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\nThis complete replacement filter kit restores full filtration performance to Ameritek RO water treatment systems with five sequential barriers including sediment prefilters, dual carbon stages, a thin film reverse osmosis membrane, and inline post-filter polishing. Designed for annual service intervals to maintain optimal contaminant reduction and pure-tasting water delivery.\n\u003c\/div\u003e\n\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eFILTRATION STAGES\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eFive-Stage Purification Architecture\u003c\/h2\u003e\n\u003cdiv class=\"stage-pipeline\"\u003e\n\u003cdiv class=\"stage-card\"\u003e\n\u003cdiv class=\"stage-tag\"\u003eSEDIMENT\u003c\/div\u003e\n\u003cdiv class=\"stage-name\"\u003e5 Micron Prefilter\u003c\/div\u003e\n\u003cdiv class=\"stage-desc\"\u003eRemoves particulate matter, dirt, rust, and suspended solids from incoming water supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"stage-card\"\u003e\n\u003cdiv class=\"stage-tag\"\u003eGAC\u003c\/div\u003e\n\u003cdiv class=\"stage-name\"\u003eGranular Activated Carbon\u003c\/div\u003e\n\u003cdiv class=\"stage-desc\"\u003ePrimary chlorine reduction plus taste and odor removal through high surface area adsorption\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"stage-card\"\u003e\n\u003cdiv class=\"stage-tag\"\u003eCARBON\u003c\/div\u003e\n\u003cdiv class=\"stage-name\"\u003eCarbon Block Filter\u003c\/div\u003e\n\u003cdiv class=\"stage-desc\"\u003eSecondary chlorine barrier with 5–10 micron filtration for membrane protection\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"stage-card\"\u003e\n\u003cdiv class=\"stage-tag\"\u003eMEMBRANE\u003c\/div\u003e\n\u003cdiv class=\"stage-name\"\u003eThin Film RO Element\u003c\/div\u003e\n\u003cdiv class=\"stage-desc\"\u003eSemipermeable membrane removes dissolved solids, heavy metals, and molecular contaminants\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"stage-card\"\u003e\n\u003cdiv class=\"stage-tag\"\u003ePOLISH\u003c\/div\u003e\n\u003cdiv class=\"stage-name\"\u003eInline Post-Filter\u003c\/div\u003e\n\u003cdiv class=\"stage-desc\"\u003eFinal activated carbon contact polishes water from storage tank before dispensing\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\"\u003eSPECIFICATIONS\u003c\/div\u003e\n\u003ch2 class=\"ro-title\"\u003eKit Contents and Performance Data\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Compatibility\u003c\/td\u003e\n\u003ctd\u003eAmeritek RO Water Treatment Systems by IPW Industries Inc.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Components\u003c\/td\u003e\n\u003ctd\u003e5 filter cartridges (complete annual service kit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSediment Prefilter\u003c\/td\u003e\n\u003ctd\u003e5 micron spun polypropylene or pleated sediment cartridge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarbon Filters\u003c\/td\u003e\n\u003ctd\u003e1× GAC cartridge, 1× carbon block cartridge (5–10 micron), 1× inline post-filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMembrane Element\u003c\/td\u003e\n\u003ctd\u003eThin film composite (TFC) reverse osmosis membrane for TDS reduction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eService Interval\u003c\/td\u003e\n\u003ctd\u003e12 months or per manufacturer recommendation based on water quality\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eResidential point-of-use RO systems for drinking and cooking water\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\"\u003eSystem Integration and Use Cases\u003c\/h2\u003e\n\u003cp\u003eThis five-component filter kit is engineered as a direct replacement set for Ameritek reverse osmosis systems manufactured by IPW Industries. The kit provides a full-year supply of consumable filtration media in a single package, ensuring proper sequencing of sediment removal, chlorine reduction, membrane separation, and final polishing. Suitable for municipal and well water sources where routine maintenance of all filtration stages is required to sustain flow rate, rejection performance, and water quality. Each component is sized and rated to match OEM specifications for drop-in installation without system modification.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n💧 Replace all five stages simultaneously at the 12-month mark rather than individually—this ensures balanced contaminant loading across prefilters and extends membrane lifespan by preventing premature fouling or chlorine damage.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Isopure Water","offers":[{"title":"5 Stage W\/ Membrane","offer_id":45456386949291,"sku":"(1) Sed (1) CB (1) GAC (1) 50 GPD (1) In-line","price":44.0,"currency_code":"USD","in_stock":true},{"title":"4 stage without membrane","offer_id":45456386982059,"sku":"IPW Sed | CB | GAC | Inline","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-6166187016363-padded.jpg?v=1777260712"},{"product_id":"compatible-ameritek-alkaline-ro-system-replacement-water-filter-kit","title":"Compatible Ameritek Alkaline RO System Replacement Water Filter Kit","description":"\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\n\u003cstyle\u003e\n .ro-wrap {\n --deep: #0a1628;\n --ocean: #0f3460;\n --sky: #2196f3;\n --aqua: #4dd0e1;\n --white: #ffffff;\n --offwhite: #f2f7fc;\n --slate: #dce8f5;\n --text: #0d1f38;\n --muted: #4a6280;\n --green: #16a34a;\n --green-bg: #dcfce7;\n --amber: #d97706;\n --radius: 12px;\n font-family: 'DM Sans', sans-serif;\n color: var(--text);\n line-height: 1.6;\n -webkit-font-smoothing: antialiased;\n }\n\n .ro-wrap * { box-sizing: border-box; margin: 0; padding: 0; }\n\n \/* ── Hero ── *\/\n .ro-wrap .ro-hero {\n background: linear-gradient(135deg, var(--deep) 0%, var(--ocean) 55%, #1a5276 100%);\n color: var(--white);\n padding: 52px 40px 44px;\n border-radius: var(--radius) var(--radius) 0 0;\n position: relative;\n overflow: hidden;\n }\n\n .ro-wrap .ro-hero::before {\n content: '';\n position: absolute; inset: 0;\n background:\n radial-gradient(ellipse 70% 55% at 95% 45%, rgba(77,208,225,.15) 0%, transparent 65%),\n radial-gradient(ellipse 40% 40% at 5% 80%, rgba(255,255,255,.05) 0%, transparent 60%);\n pointer-events: none;\n }\n\n .ro-wrap .ro-eyebrow {\n font-size: 11px; font-weight: 600; letter-spacing: .18em;\n text-transform: uppercase; color: var(--aqua); margin-bottom: 12px;\n }\n\n .ro-wrap .ro-hero h2 {\n font-family: 'DM Serif Display', serif;\n font-size: clamp(26px, 4vw, 40px); line-height: 1.15;\n font-weight: 400; max-width: 720px; margin-bottom: 16px; color: var(--white);\n }\n\n .ro-wrap .ro-hero h2 em { font-style: italic; color: var(--aqua); }\n\n .ro-wrap .ro-tagline {\n font-size: 15px; color: rgba(255,255,255,.75);\n font-weight: 300; margin-bottom: 28px; max-width: 620px; line-height: 1.7;\n }\n\n .ro-wrap .ro-badges { display: flex; flex-wrap: wrap; gap: 10px; }\n\n .ro-wrap .ro-badge {\n display: inline-flex; align-items: center;\n background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.2);\n color: var(--white); font-size: 12px; font-weight: 500;\n padding: 6px 14px; border-radius: 40px; backdrop-filter: blur(6px);\n }\n\n \/* ── Callout ── *\/\n .ro-wrap .ro-callout {\n background: var(--offwhite);\n border-left: 4px solid var(--sky);\n padding: 20px 24px;\n }\n\n .ro-wrap .ro-callout p { font-size: 14.5px; color: var(--text); line-height: 1.7; }\n .ro-wrap .ro-callout strong { color: var(--ocean); }\n\n \/* ── Kit selector ── *\/\n .ro-wrap .kit-grid {\n display: grid; grid-template-columns: 1fr 1fr; gap: 16px;\n padding: 28px 40px; background: var(--offwhite);\n border-bottom: 1px solid var(--slate);\n }\n\n .ro-wrap .kit-card {\n background: var(--white); border: 2px solid var(--slate);\n border-radius: var(--radius); padding: 22px 20px;\n position: relative;\n }\n\n .ro-wrap .kit-card.featured { border-color: var(--sky); }\n\n .ro-wrap .kit-tag {\n display: inline-block; font-size: 10px; font-weight: 700; letter-spacing: .1em;\n text-transform: uppercase; padding: 3px 10px; border-radius: 20px;\n margin-bottom: 10px;\n }\n\n .ro-wrap .kit-card.featured .kit-tag { background: var(--sky); color: var(--white); }\n .ro-wrap .kit-card:not(.featured) .kit-tag { background: var(--slate); color: var(--ocean); }\n\n .ro-wrap .kit-card h3 {\n font-family: 'DM Serif Display', serif;\n font-size: 18px; font-weight: 400; color: var(--deep); margin-bottom: 8px;\n }\n\n .ro-wrap .kit-card p { font-size: 13px; color: var(--muted); line-height: 1.6; margin-bottom: 14px; }\n\n .ro-wrap .kit-stages { display: flex; flex-wrap: wrap; gap: 6px; }\n\n .ro-wrap .ks-tag {\n font-size: 11px; font-weight: 600;\n padding: 3px 9px; border-radius: 20px;\n }\n\n .ro-wrap .kit-card.featured .ks-tag { background: rgba(33,150,243,.1); color: var(--ocean); border: 1px solid rgba(33,150,243,.2); }\n .ro-wrap .kit-card:not(.featured) .ks-tag { background: var(--offwhite); color: var(--muted); border: 1px solid var(--slate); }\n\n .ro-wrap .ks-tag.ks-alkaline { background: rgba(22,163,74,.1); color: var(--green); border: 1px solid rgba(22,163,74,.2); }\n .ro-wrap .ks-tag.ks-membrane { background: rgba(217,119,6,.1); color: var(--amber); border: 1px solid rgba(217,119,6,.2); }\n .ro-wrap .ks-tag.ks-mem-only { background: var(--offwhite); color: var(--muted); border: 1px solid var(--slate); font-style: italic; }\n\n \/* ── Sections ── *\/\n .ro-wrap .ro-section { padding: 36px 40px; border-bottom: 1px solid var(--slate); }\n .ro-wrap .ro-section.alt { background: var(--offwhite); }\n\n .ro-wrap .ro-label {\n font-size: 10px; font-weight: 700; letter-spacing: .2em;\n text-transform: uppercase; color: var(--sky); margin-bottom: 8px;\n }\n\n .ro-wrap .ro-title {\n font-family: 'DM Serif Display', serif;\n font-size: 22px; color: var(--deep); margin-bottom: 20px; font-weight: 400;\n }\n\n \/* ── Stage pipeline ── *\/\n .ro-wrap .stage-pipeline { display: flex; flex-direction: column; gap: 0; margin-top: 4px; }\n\n .ro-wrap .stage-row {\n display: flex; flex-direction: row;\n gap: 0 18px; position: relative; align-items: flex-start;\n }\n\n .ro-wrap .stage-row:not(:last-child) .stage-line {\n position: absolute; left: 17px; top: 40px; bottom: 0;\n width: 2px; background: var(--slate); z-index: 0;\n }\n\n .ro-wrap .stage-num {\n flex: 0 0 36px; min-width: 36px; max-width: 36px; height: 36px;\n border-radius: 50%;\n background: linear-gradient(135deg, var(--ocean), var(--sky));\n color: white; display: flex; align-items: center; justify-content: center;\n font-size: 15px; font-weight: 700;\n position: relative; z-index: 1; margin-top: 4px;\n }\n\n .ro-wrap .stage-num.alkaline-num {\n background: linear-gradient(135deg, #065f46, var(--green));\n }\n\n .ro-wrap .stage-body {\n flex: 1 1 0; min-width: 0;\n background: var(--white); border: 1px solid var(--slate);\n border-radius: var(--radius); padding: 14px 16px; margin-bottom: 12px;\n }\n\n .ro-wrap .stage-body.alkaline-body { border-color: #86efac; background: #f0fdf4; }\n\n .ro-wrap .stage-tag {\n display: block; font-size: 10px; font-weight: 700; letter-spacing: .07em;\n text-transform: uppercase; background: var(--slate); color: var(--ocean);\n padding: 2px 8px; border-radius: 20px; margin-bottom: 8px;\n white-space: nowrap; overflow: hidden; text-overflow: ellipsis;\n width: fit-content;\n }\n\n .ro-wrap .stage-tag.tag-membrane { background: rgba(217,119,6,.15); color: var(--amber); }\n .ro-wrap .stage-tag.tag-alkaline { background: var(--green-bg); color: var(--green); }\n\n .ro-wrap .stage-body h3 { font-size: 14px; font-weight: 600; color: var(--deep); margin-bottom: 4px; }\n .ro-wrap .stage-body p { font-size: 13px; color: var(--muted); line-height: 1.55; }\n\n .ro-wrap .stage-removes {\n display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px;\n }\n\n .ro-wrap .stage-removes span {\n font-size: 11px; font-weight: 600;\n background: var(--offwhite); border: 1px solid var(--slate);\n color: var(--ocean); padding: 2px 9px; border-radius: 20px;\n }\n\n .ro-wrap .membrane-only-note {\n display: inline-block; font-size: 11px; font-weight: 600;\n background: rgba(217,119,6,.1); border: 1px solid rgba(217,119,6,.3);\n color: var(--amber); padding: 3px 10px; border-radius: 20px; margin-top: 10px;\n }\n\n \/* ── Specs table ── *\/\n .ro-wrap .specs-table { width: 100%; border-collapse: collapse; font-size: 13px; }\n\n .ro-wrap .specs-table th {\n background: var(--deep); color: var(--white);\n font-size: 11px; font-weight: 600; letter-spacing: .06em;\n text-transform: uppercase; padding: 10px 14px; text-align: left;\n }\n\n .ro-wrap .specs-table th:first-child { border-radius: 8px 0 0 0; }\n .ro-wrap .specs-table th:last-child { border-radius: 0 8px 0 0; }\n\n .ro-wrap .specs-table td {\n padding: 10px 14px; border-bottom: 1px solid var(--slate); color: var(--text);\n }\n\n .ro-wrap .specs-table td:first-child { font-weight: 600; color: var(--ocean); width: 40%; }\n .ro-wrap .specs-table tr:last-child td { border-bottom: none; }\n .ro-wrap .specs-table tr:nth-child(even) td { background: var(--offwhite); }\n\n \/* ── Schedule cards ── *\/\n .ro-wrap .filter-schedule {\n display: grid; grid-template-columns: repeat(auto-fill, minmax(min(180px,100%), 1fr)); gap: 14px;\n }\n\n .ro-wrap .schedule-card {\n background: var(--white); border: 1px solid var(--slate);\n border-radius: var(--radius); padding: 16px;\n }\n\n .ro-wrap .schedule-card .interval {\n font-family: 'DM Serif Display', serif;\n font-size: 22px; color: var(--sky); font-weight: 400; margin-bottom: 4px;\n }\n\n .ro-wrap .schedule-card h4 { font-size: 13px; font-weight: 600; color: var(--deep); margin-bottom: 4px; }\n .ro-wrap .schedule-card p { font-size: 12px; color: var(--muted); line-height: 1.45; }\n\n \/* ── Pro tip ── *\/\n .ro-wrap .pro-tip {\n display: block;\n background: #fffbeb; border: 1px solid #f5d87a;\n border-radius: var(--radius); padding: 18px 20px; margin-top: 20px;\n }\n\n .ro-wrap .pro-tip p { font-size: 13.5px; color: #5a4500; line-height: 1.6; }\n .ro-wrap .pro-tip strong { color: #3d2e00; }\n\n \/* ── Feature cards ── *\/\n .ro-wrap .ro-feature-grid {\n display: grid; grid-template-columns: repeat(auto-fill, minmax(min(220px,100%), 1fr)); gap: 16px;\n }\n\n .ro-wrap .ro-feature-card {\n background: var(--white); border: 1px solid var(--slate);\n border-radius: var(--radius); padding: 20px 18px;\n }\n\n .ro-wrap .ro-feat-icon {\n width: 40px; height: 40px;\n background: linear-gradient(135deg, var(--ocean), var(--sky));\n border-radius: 10px; display: flex; align-items: center;\n justify-content: center; margin-bottom: 12px; font-size: 18px;\n }\n\n .ro-wrap .ro-feature-card h3 { font-size: 14px; font-weight: 600; color: var(--deep); margin-bottom: 6px; }\n .ro-wrap .ro-feature-card p { font-size: 13px; color: var(--muted); line-height: 1.55; }\n\n \/* ── Benefits strip ── *\/\n .ro-wrap .benefits-strip {\n display: flex; flex-wrap: wrap;\n background: var(--deep); color: var(--white);\n border-radius: 0 0 var(--radius) var(--radius); overflow: hidden;\n }\n\n .ro-wrap .benefit-item {\n flex: 1 1 200px; padding: 24px 22px;\n border-right: 1px solid rgba(255,255,255,.08); transition: background .2s;\n }\n\n .ro-wrap .benefit-item:last-child { border-right: none; }\n .ro-wrap .benefit-item:hover { background: rgba(77,208,225,.07); }\n .ro-wrap .bi-icon { font-size: 22px; margin-bottom: 10px; }\n\n .ro-wrap .benefit-item h4 {\n font-size: 13px; font-weight: 600; color: var(--aqua);\n margin-bottom: 5px; text-transform: uppercase; letter-spacing: .05em;\n }\n\n .ro-wrap .benefit-item p { font-size: 12.5px; color: rgba(255,255,255,.55); line-height: 1.55; }\n\n \/* ── Responsive ── *\/\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 .kit-grid { grid-template-columns: 1fr; padding: 24px 20px; }\n .ro-wrap .ro-feature-grid, .ro-wrap .filter-schedule { 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,.08); }\n .ro-wrap .benefit-item:last-child { border-bottom: none; }\n }\n\u003c\/style\u003e\n\n\u003cdiv class=\"ro-wrap\"\u003e\n\n \u003c!-- HERO --\u003e\n \u003cdiv class=\"ro-hero\"\u003e\n \u003cp class=\"ro-eyebrow\"\u003eAmeritek USA · RO Replacement Filters\u003c\/p\u003e\n \u003ch2\u003eAlkaline RO System — \u003cem\u003eComplete Replacement Filter Kit\u003c\/em\u003e\n\u003c\/h2\u003e\n \u003cp class=\"ro-tagline\"\u003eEverything your Ameritek Alkaline system needs in one kit — sediment, carbon block, GAC, membrane, inline GAC polisher, and the alkaline mineral stage that raises pH and restores taste. Two kit options for annual full-service or routine 6-month maintenance.\u003c\/p\u003e\n \u003cdiv class=\"ro-badges\"\u003e\n \u003cspan class=\"ro-badge\"\u003eOEM Compatible\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003e6-Stage Filtration\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003eAlkaline Mineral Stage\u003c\/span\u003e\n \u003cspan class=\"ro-badge\"\u003eTwo Kit Options\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- CALLOUT --\u003e\n \u003cdiv class=\"ro-callout\"\u003e\n \u003cp\u003eThe Ameritek Alkaline RO system adds one critical stage that standard 5-stage RO systems omit: \u003cstrong\u003ean inline alkaline mineral cartridge\u003c\/strong\u003e that re-introduces calcium, magnesium, and trace minerals after the membrane. This raises the pH of the purified water, improves taste, and delivers mineral content that pure RO water lacks. The filter kits below keep all six stages performing as designed.\u003c\/p\u003e\n \u003c\/div\u003e\n\n \u003c!-- KIT SELECTOR --\u003e\n \u003cdiv class=\"kit-grid\"\u003e\n \u003cdiv class=\"kit-card featured\"\u003e\n \u003cspan class=\"kit-tag\"\u003eMost Complete\u003c\/span\u003e\n \u003ch3\u003e6-Stage Kit — With Membrane\u003c\/h3\u003e\n \u003cp\u003eFull annual replacement set including the TFC RO membrane. Best value for complete system refresh every 12–24 months when your membrane is due for replacement.\u003c\/p\u003e\n \u003cdiv class=\"kit-stages\"\u003e\n \u003cspan class=\"ks-tag\"\u003eSediment\u003c\/span\u003e\n \u003cspan class=\"ks-tag\"\u003eGAC\u003c\/span\u003e\n \u003cspan class=\"ks-tag\"\u003eCarbon Block\u003c\/span\u003e\n \u003cspan class=\"ks-tag ks-membrane\"\u003eTFC Membrane\u003c\/span\u003e\n \u003cspan class=\"ks-tag\"\u003eInline GAC\u003c\/span\u003e\n \u003cspan class=\"ks-tag ks-alkaline\"\u003eAlkaline\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"kit-card\"\u003e\n \u003cspan class=\"kit-tag\"\u003ePre\/Post Only\u003c\/span\u003e\n \u003ch3\u003e5-Stage Kit — Without Membrane\u003c\/h3\u003e\n \u003cp\u003ePre-filters and post-filters only — for routine 6–12 month replacement when your membrane still has remaining service life and only the stage filters need changing.\u003c\/p\u003e\n \u003cdiv class=\"kit-stages\"\u003e\n \u003cspan class=\"ks-tag\"\u003eSediment\u003c\/span\u003e\n \u003cspan class=\"ks-tag\"\u003eGAC\u003c\/span\u003e\n \u003cspan class=\"ks-tag\"\u003eCarbon Block\u003c\/span\u003e\n \u003cspan class=\"ks-tag ks-mem-only\"\u003eMembrane not included\u003c\/span\u003e\n \u003cspan class=\"ks-tag\"\u003eInline GAC\u003c\/span\u003e\n \u003cspan class=\"ks-tag ks-alkaline\"\u003eAlkaline\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- STAGE PIPELINE --\u003e\n \u003cdiv class=\"ro-section\"\u003e\n \u003cp class=\"ro-label\"\u003eWhat's Included\u003c\/p\u003e\n \u003ch3 class=\"ro-title\"\u003eAll 6 Stages — What Each Filter Does\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\"\u003ePre-Filter\u003c\/span\u003e\n \u003ch3\u003e5 Micron Sediment Filter\u003c\/h3\u003e\n \u003cp\u003eCaptures particulates, dirt, rust, and debris before they reach the carbon and membrane stages. Protects downstream filters from premature clogging and is the most frequently replaced stage in most systems.\u003c\/p\u003e\n \u003cdiv class=\"stage-removes\"\u003e\n \u003cspan\u003eSand \u0026amp; silt\u003c\/span\u003e\n \u003cspan\u003eRust particles\u003c\/span\u003e\n \u003cspan\u003eDirt \u0026amp; debris\u003c\/span\u003e\n \u003cspan\u003e5 micron \u0026amp; larger\u003c\/span\u003e\n \u003c\/div\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\"\u003ePre-Filter\u003c\/span\u003e\n \u003ch3\u003eGranular Activated Carbon (GAC)\u003c\/h3\u003e\n \u003cp\u003eGAC removes chlorine, chloramines, and organic compounds from the incoming supply. The primary function is protecting the RO membrane — chlorine rapidly degrades TFC membrane material, and GAC removal upstream significantly extends membrane service life.\u003c\/p\u003e\n \u003cdiv class=\"stage-removes\"\u003e\n \u003cspan\u003eChlorine\u003c\/span\u003e\n \u003cspan\u003eChloramines\u003c\/span\u003e\n \u003cspan\u003eTaste \u0026amp; odor\u003c\/span\u003e\n \u003cspan\u003eOrganic compounds\u003c\/span\u003e\n \u003c\/div\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\"\u003ePre-Filter\u003c\/span\u003e\n \u003ch3\u003eCarbon Block Filter\u003c\/h3\u003e\n \u003cp\u003eA compressed carbon block provides a final layer of chlorine and chloramine reduction plus 5–10 micron mechanical filtration before the membrane. The tighter structure offers more thorough contact between water and carbon compared to GAC, providing a cleaner membrane feed.\u003c\/p\u003e\n \u003cdiv class=\"stage-removes\"\u003e\n \u003cspan\u003eResidual chlorine\u003c\/span\u003e\n \u003cspan\u003eVOCs\u003c\/span\u003e\n \u003cspan\u003eFine sediment\u003c\/span\u003e\n \u003cspan\u003eCysts\u003c\/span\u003e\n \u003c\/div\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\"\u003e4\u003c\/div\u003e\n \u003cdiv class=\"stage-body\"\u003e\n \u003cspan class=\"stage-tag tag-membrane\"\u003eMembrane\u003c\/span\u003e\n \u003ch3\u003eThin Film Composite (TFC) RO Membrane\u003c\/h3\u003e\n \u003cp\u003eThe core of the system. The TFC membrane forces water through pores so fine they block dissolved contaminants at the molecular level — rejecting up to 99% of TDS, heavy metals, nitrates, fluoride, arsenic, and most bacteria and viruses. Permeate water is stored in the tank; reject water flushes to drain.\u003c\/p\u003e\n \u003cdiv class=\"stage-removes\"\u003e\n \u003cspan\u003eTDS \/ dissolved solids\u003c\/span\u003e\n \u003cspan\u003eLead \u0026amp; heavy metals\u003c\/span\u003e\n \u003cspan\u003eNitrates \u0026amp; fluoride\u003c\/span\u003e\n \u003cspan\u003eArsenic\u003c\/span\u003e\n \u003cspan\u003eBacteria \u0026amp; viruses\u003c\/span\u003e\n \u003c\/div\u003e\n \u003cspan class=\"membrane-only-note\"\u003e⚠ Included in 6-Stage kit only\u003c\/span\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\"\u003e5\u003c\/div\u003e\n \u003cdiv class=\"stage-body\"\u003e\n \u003cspan class=\"stage-tag\"\u003ePost-Filter\u003c\/span\u003e\n \u003ch3\u003eInline GAC Post-Filter\u003c\/h3\u003e\n \u003cp\u003eAfter purified water sits in the pressurized storage tank, this inline GAC cartridge polishes out any residual taste or odor picked up during storage. Ensures clean, fresh-tasting water at every pour regardless of how long water sat in the tank.\u003c\/p\u003e\n \u003cdiv class=\"stage-removes\"\u003e\n \u003cspan\u003ePost-tank odors\u003c\/span\u003e\n \u003cspan\u003eResidual taste issues\u003c\/span\u003e\n \u003cspan\u003eFinal organic polishing\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"stage-row\"\u003e\n \u003cdiv class=\"stage-num alkaline-num\"\u003e6\u003c\/div\u003e\n \u003cdiv class=\"stage-body alkaline-body\"\u003e\n \u003cspan class=\"stage-tag tag-alkaline\"\u003eAlkaline\u003c\/span\u003e\n \u003ch3\u003eInline Alkaline Mineral Cartridge\u003c\/h3\u003e\n \u003cp\u003eWhat sets the Ameritek apart from a standard RO system. Pure RO water is slightly acidic and stripped of naturally occurring minerals. This inline mineral cartridge re-introduces calcium, magnesium, and trace minerals into the purified water — raising the pH toward neutral or slightly alkaline, enhancing taste, and restoring mineral content that many users prefer.\u003c\/p\u003e\n \u003cdiv class=\"stage-removes\"\u003e\n \u003cspan\u003e↑ Raises pH\u003c\/span\u003e\n \u003cspan\u003eAdds calcium \u0026amp; magnesium\u003c\/span\u003e\n \u003cspan\u003eRestores trace minerals\u003c\/span\u003e\n \u003cspan\u003eImproves taste\u003c\/span\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c\/div\u003e\n\n \u003cdiv class=\"pro-tip\"\u003e\n \u003cp\u003e\u003cstrong\u003e💡 Which kit to buy:\u003c\/strong\u003e Replace pre- and post-filters (Stages 1–3, 5–6) every 6–12 months. Replace the membrane (Stage 4) every 2–3 years, or when TDS rejection drops below 85% as measured with a TDS meter. If you're due for both, the 6-stage kit is the better value. If your membrane tested well at last change, use the 5-stage kit and save the membrane cost for next year.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- MAINTENANCE SCHEDULE --\u003e\n \u003cdiv class=\"ro-section alt\"\u003e\n \u003cp class=\"ro-label\"\u003eMaintenance Schedule\u003c\/p\u003e\n \u003ch3 class=\"ro-title\"\u003eWhen to Replace Each Stage\u003c\/h3\u003e\n \u003cdiv class=\"filter-schedule\"\u003e\n \u003cdiv class=\"schedule-card\"\u003e\n \u003cdiv class=\"interval\"\u003e6–12 mo\u003c\/div\u003e\n \u003ch4\u003eSediment Pre-Filter\u003c\/h4\u003e\n \u003cp\u003eReplace more frequently in high-sediment water. A clogged sediment filter reduces flow and forces the carbon stages to work harder.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"schedule-card\"\u003e\n \u003cdiv class=\"interval\"\u003e6–12 mo\u003c\/div\u003e\n \u003ch4\u003eGAC Pre-Filter\u003c\/h4\u003e\n \u003cp\u003eCritical for membrane protection. Chlorine breakthrough from an exhausted GAC filter is the leading cause of early membrane failure.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"schedule-card\"\u003e\n \u003cdiv class=\"interval\"\u003e6–12 mo\u003c\/div\u003e\n \u003ch4\u003eCarbon Block Pre-Filter\u003c\/h4\u003e\n \u003cp\u003eReplace on the same schedule as GAC. Together these two stages are the membrane's primary defense against oxidative damage.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"schedule-card\"\u003e\n \u003cdiv class=\"interval\"\u003e2–3 yr\u003c\/div\u003e\n \u003ch4\u003eTFC RO Membrane\u003c\/h4\u003e\n \u003cp\u003eMonitor with a TDS meter. Replace when rejection drops below 85% of source water TDS. Included in the 6-Stage kit only.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"schedule-card\"\u003e\n \u003cdiv class=\"interval\"\u003e12 mo\u003c\/div\u003e\n \u003ch4\u003eInline GAC Post-Filter\u003c\/h4\u003e\n \u003cp\u003eReplace annually regardless of usage. This stage is the last contact before the faucet — keep it fresh for the best-tasting water.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"schedule-card\"\u003e\n \u003cdiv class=\"interval\"\u003e12 mo\u003c\/div\u003e\n \u003ch4\u003eAlkaline Mineral Cartridge\u003c\/h4\u003e\n \u003cp\u003eReplace annually. Mineral media depletes over time — a spent alkaline cartridge stops raising pH and adding minerals effectively.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"pro-tip\"\u003e\n \u003cp\u003e\u003cstrong\u003e💡 Track membrane health with a TDS meter:\u003c\/strong\u003e Test your source water TDS, then test RO output. A healthy membrane shows 90–99% reduction. If rejection drops below 85%, the membrane needs replacement regardless of age. A $15 TDS pen is the most useful tool an RO owner can have.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- BENEFITS STRIP --\u003e\n \u003cdiv class=\"benefits-strip\"\u003e\n \u003cdiv class=\"benefit-item\"\u003e\n \u003cdiv class=\"bi-icon\" aria-hidden=\"true\"\u003e🌿\u003c\/div\u003e\n \u003ch4\u003eAlkaline Advantage\u003c\/h4\u003e\n \u003cp\u003eThe Stage 6 mineral cartridge restores pH and trace minerals that standard RO removes — producing water that's both pure and properly mineralized.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"benefit-item\"\u003e\n \u003cdiv class=\"bi-icon\" aria-hidden=\"true\"\u003e📦\u003c\/div\u003e\n \u003ch4\u003eOne Kit, Everything Included\u003c\/h4\u003e\n \u003cp\u003eAll filters arrive together — no piecing together individual cartridges from multiple suppliers or checking compatibility for each stage.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"benefit-item\"\u003e\n \u003cdiv class=\"bi-icon\" aria-hidden=\"true\"\u003e🛡️\u003c\/div\u003e\n \u003ch4\u003eMembrane Protection\u003c\/h4\u003e\n \u003cp\u003eTriple pre-filtration with sediment, GAC, and carbon block removes the sediment and chlorine that cause 90% of premature membrane failures.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003cdiv class=\"benefit-item\"\u003e\n \u003cdiv class=\"bi-icon\" aria-hidden=\"true\"\u003e💰\u003c\/div\u003e\n \u003ch4\u003eTwo Kit Options\u003c\/h4\u003e\n \u003cp\u003eBuy the 6-stage with membrane for full annual service, or save with the 5-stage pre\/post kit when your membrane still has life remaining.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\u003c!-- end .ro-wrap --\u003e","brand":"Isopure Water","offers":[{"title":"6 Stage W\/ Membrane","offer_id":45456375873707,"sku":"Sed | CB | GAC | Inline | ICF-2512-ALK| Mem","price":105.33,"currency_code":"USD","in_stock":true},{"title":"5 Stage without Membrane","offer_id":45456375906475,"sku":"IPW Sed | CB | GAC | Inline | ICF-2512-ALK","price":78.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-6166270214315-padded.jpg?v=1777260700"},{"product_id":"complete-4-pack-replacement-filter-kit-for-krystal-pure-kr15-ro-system-includes-membrane-carbon-block-filters-polypropylene-sediment-filter","title":"Krystal Pure KR15 and KR10 RO System - Replacement Filters and Membrane Combo by IPW Industries Inc","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\nThis complete KR15 and KR10 replacement filter and membrane combo by IPW Industries Inc restores full filtration performance to your Krystal Pure reverse osmosis system. You get all four critical components in one package: sediment pre-filter, carbon block, inline post-filter, and 50 GPD RO membrane.\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\"\u003eWhat's Included\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eIPW Industries Inc (compatible replacement)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eKrystal Pure KR15 and KR10 RO systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Dimensions\u003c\/td\u003e\n\u003ctd\u003e10-inch length × 2.5-inch diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMembrane Capacity\u003c\/td\u003e\n\u003ctd\u003e50 gallons per day (GPD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Contents\u003c\/td\u003e\n\u003ctd\u003eSediment filter, carbon block, inline filter, RO membrane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Format\u003c\/td\u003e\n\u003ctd\u003eUniversal 10-inch cartridge style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplacement Interval\u003c\/td\u003e\n\u003ctd\u003eFilters every 6-12 months, membrane every 2-3 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Type\u003c\/td\u003e\n\u003ctd\u003eUnder-sink reverse osmosis\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\"\u003eReplacement Procedure\u003c\/h2\u003e\n\u003col class=\"install-steps\"\u003e\n\u003cli\u003eShut off the water supply to your RO system and relieve system pressure by opening the faucet until water stops flowing\u003c\/li\u003e\n\u003cli\u003eRemove existing filter housings using a filter wrench, discard old cartridges, and rinse housings with clean water\u003c\/li\u003e\n\u003cli\u003eInstall the new sediment and carbon block filters in the pre-filter housings, then replace the inline post-filter on the output line\u003c\/li\u003e\n\u003cli\u003eReplace the RO membrane in its pressure vessel, ensuring the O-rings are properly seated and lubricated\u003c\/li\u003e\n\u003cli\u003eReassemble all housings hand-tight plus a quarter turn, restore water supply, check for leaks, and flush the system for 10 minutes before use\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\"\u003eFitment Information\u003c\/h2\u003e\n\u003cp\u003eThis kit is designed to fit Krystal Pure KR15 and KR10 under-sink reverse osmosis systems with standard 10-inch filter housings. This is a compatible replacement product manufactured by IPW Industries Inc, not an original equipment manufacturer (OEM) part. It is not affiliated with or endorsed by Krystal Pure, and is not covered under any OEM warranties. All brand names and model numbers are referenced solely for compatibility identification purposes. Any product warranties are provided exclusively by IPW Industries Inc.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pro-tip\"\u003e\n🔧 \u003cstrong\u003ePro tip:\u003c\/strong\u003e Mark your calendar when you install these filters so you remember to replace the sediment and carbon stages in 6-12 months, but leave the membrane in place for 2-3 years unless you notice a significant drop in water production or quality.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"IPW Industries Inc","offers":[{"title":"Default Title","offer_id":45482208198827,"sku":"1Sed\/2CB\/1MEM-50GPD","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/product-7632048357547-padded.jpg?v=1777266854"}],"url":"https:\/\/www.isopurewater.com\/collections\/rainsoft-krystal-pure-ameritek-proline-filters.oembed","provider":"Isopure Water","version":"1.0","type":"link"}