Pro Products Poly Guard Crystals form a protective coating on water-exposed surfaces to prevent hard water scale and iron buildup in your plumbing, equipment, and appliances. NSF-certified to Standard 60, this polyphosphate formula sequesters up to 12 GPG hardness and 1 GPG iron, treating 20,000 gallons per pound through compatible filter housings.
SPECIFICATIONS
Technical Details
| Manufacturer | Pro Products |
| Product Type | Polyphosphate Scale Prevention Crystals |
| Treatment Capacity | 20,000 gallons per pound of crystals |
| Cartridge Capacity | 30,000 gallons (with 1.5 lb cartridge) |
| Hardness Sequestration | Up to 12 GPG (200 PPM) |
| Iron Sequestration | Up to 1 GPG (17 PPM) |
| Service Life | 6 months or 30,000 gallons (whichever comes first) |
| Certification | NSF/ANSI Standard 60 for drinking water additives |
INSTALLATION & USE
How to Deploy Poly Guard Crystals
- Load 1.5 pounds of Poly Guard Crystals into a compatible Pro Products refillable cartridge designed for polyphosphate dosing
- Install the filled cartridge into a standard 10-inch whole house filter housing at the point of entry to your water system
- Monitor water flow and system performance, replacing crystals every 30,000 gallons or 6 months to maintain effective scale and corrosion control
COMPATIBILITY
Housing & Application Requirements
Poly Guard Crystals are designed to be used with Pro Products' patented refillable polyphosphate cartridge, which fits standard 10-inch whole house filter housings. The crystals do not dissolve completely and require periodic replacement to maintain efficacy. This system is ideal for well water applications, tankless water heaters, boilers, and any plumbing system experiencing hard water scale or iron staining issues.
🔧 Pro Tip: The crystals will not fully dissolve during normal use. Replace them based on gallons treated or every six months, even if crystals remain visible in the cartridge, to ensure continued protection against scale formation.
