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Pro Products Poly Guard® Cartridge - Prevent Hard Water Rust; Scale & Rust Preventer

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Pro Products Poly Guard® Cartridge - Prevent Hard Water Rust; Scale & Rust Preventer

The Pro Products Poly Guard® Cartridge (GP10C) delivers triple-action protection against scale, corrosion, and rust staining in whole-house water systems. This NSF-certified cartridge uses food-grade polyphosphate crystals to treat up to 30,000 gallons, protecting plumbing and appliances while reducing heavy metal leaching.
SPECIFICATIONS

Pro Products GP10C Poly Guard® Technical Details

Model Number Pro Products GP10C Poly-Guard Crystal Cartridge
Cartridge Size Standard 10" whole house filter housing
Crystal Weight 1.5 lbs food-grade polyphosphate
Capacity 30,000 gallons (replace every 6 months)
Max Hardness 12 grains per gallon
Max Iron Content 1 part per million
Temperature Range 40-125° F (4.4-37.8° C)
Certification NSF/ANSI Standard 60 for drinking water additives
INSTALLATION & USE

How to Install the Poly Guard® Cartridge

  1. Turn off water supply and relieve pressure from the filter housing by opening a downstream faucet
  2. Unscrew the 10" standard whole house filter housing and remove any existing cartridge
  3. Insert the Pro Products GP10C Poly Guard® Cartridge into the housing, ensuring proper seating
  4. Hand-tighten the housing back onto the filter head, checking for proper o-ring seal
  5. Turn water supply back on slowly and check for leaks, then flush system for 2-3 minutes
COMPATIBILITY

Fits Standard Whole House Systems

The GP10C Poly Guard® Cartridge fits all standard 10" whole house filter housings from major manufacturers including Pentek, Culligan, GE, Omnifilter, and DuPont. Ideal for homes experiencing scale buildup, rust staining, or corrosion issues in water heaters, washing machines, dishwashers, and plumbing fixtures. The polyphosphate crystals coat pipe interiors to reduce copper and lead leaching while sequestering hardness minerals and low levels of iron without removing beneficial minerals from drinking water.

🔧 Pro Tip: Polyphosphate crystals will not dissolve completely, leaving a small residue when spent. Replace the cartridge every 30,000 gallons or 6 months, whichever comes first, to maintain consistent protection. For optimal performance in high-iron water, pair with a sediment pre-filter to remove particulate iron before the Poly Guard® stage.
The Pro Products Poly Guard® Cartridge (GP10C) delivers triple-action protection against scale, corrosion, and rust staining in whole-house water systems. This NSF-certified cartridge uses food-grade polyphosphate crystals to treat up to 30,000 gallons, protecting plumbing and appliances while reducing heavy metal leaching.
SPECIFICATIONS

Pro Products GP10C Poly Guard® Technical Details

Model Number Pro Products GP10C Poly-Guard Crystal Cartridge
Cartridge Size Standard 10" whole house filter housing
Crystal Weight 1.5 lbs food-grade polyphosphate
Capacity 30,000 gallons (replace every 6 months)
Max Hardness 12 grains per gallon
Max Iron Content 1 part per million
Temperature Range 40-125° F (4.4-37.8° C)
Certification NSF/ANSI Standard 60 for drinking water additives
INSTALLATION & USE

How to Install the Poly Guard® Cartridge

  1. Turn off water supply and relieve pressure from the filter housing by opening a downstream faucet
  2. Unscrew the 10" standard whole house filter housing and remove any existing cartridge
  3. Insert the Pro Products GP10C Poly Guard® Cartridge into the housing, ensuring proper seating
  4. Hand-tighten the housing back onto the filter head, checking for proper o-ring seal
  5. Turn water supply back on slowly and check for leaks, then flush system for 2-3 minutes
COMPATIBILITY

Fits Standard Whole House Systems

The GP10C Poly Guard® Cartridge fits all standard 10" whole house filter housings from major manufacturers including Pentek, Culligan, GE, Omnifilter, and DuPont. Ideal for homes experiencing scale buildup, rust staining, or corrosion issues in water heaters, washing machines, dishwashers, and plumbing fixtures. The polyphosphate crystals coat pipe interiors to reduce copper and lead leaching while sequestering hardness minerals and low levels of iron without removing beneficial minerals from drinking water.

🔧 Pro Tip: Polyphosphate crystals will not dissolve completely, leaving a small residue when spent. Replace the cartridge every 30,000 gallons or 6 months, whichever comes first, to maintain consistent protection. For optimal performance in high-iron water, pair with a sediment pre-filter to remove particulate iron before the Poly Guard® stage.
$81.20
Pro Products Poly Guard® Cartridge - Prevent Hard Water Rust; Scale & Rust Preventer—
$81.20

Description

The Pro Products Poly Guard® Cartridge (GP10C) delivers triple-action protection against scale, corrosion, and rust staining in whole-house water systems. This NSF-certified cartridge uses food-grade polyphosphate crystals to treat up to 30,000 gallons, protecting plumbing and appliances while reducing heavy metal leaching.
SPECIFICATIONS

Pro Products GP10C Poly Guard® Technical Details

Model Number Pro Products GP10C Poly-Guard Crystal Cartridge
Cartridge Size Standard 10" whole house filter housing
Crystal Weight 1.5 lbs food-grade polyphosphate
Capacity 30,000 gallons (replace every 6 months)
Max Hardness 12 grains per gallon
Max Iron Content 1 part per million
Temperature Range 40-125° F (4.4-37.8° C)
Certification NSF/ANSI Standard 60 for drinking water additives
INSTALLATION & USE

How to Install the Poly Guard® Cartridge

  1. Turn off water supply and relieve pressure from the filter housing by opening a downstream faucet
  2. Unscrew the 10" standard whole house filter housing and remove any existing cartridge
  3. Insert the Pro Products GP10C Poly Guard® Cartridge into the housing, ensuring proper seating
  4. Hand-tighten the housing back onto the filter head, checking for proper o-ring seal
  5. Turn water supply back on slowly and check for leaks, then flush system for 2-3 minutes
COMPATIBILITY

Fits Standard Whole House Systems

The GP10C Poly Guard® Cartridge fits all standard 10" whole house filter housings from major manufacturers including Pentek, Culligan, GE, Omnifilter, and DuPont. Ideal for homes experiencing scale buildup, rust staining, or corrosion issues in water heaters, washing machines, dishwashers, and plumbing fixtures. The polyphosphate crystals coat pipe interiors to reduce copper and lead leaching while sequestering hardness minerals and low levels of iron without removing beneficial minerals from drinking water.

🔧 Pro Tip: Polyphosphate crystals will not dissolve completely, leaving a small residue when spent. Replace the cartridge every 30,000 gallons or 6 months, whichever comes first, to maintain consistent protection. For optimal performance in high-iron water, pair with a sediment pre-filter to remove particulate iron before the Poly Guard® stage.
Pro Products Poly Guard® Cartridge - Prevent Hard Water Rust; Scale & Rust Preventer | Isopure Water