Pro Poly Guard Cartridge Rust & Scale Preventer- Case of 6

Pro Poly Guard Cartridge GP10C
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NSF Certified 

Part Number: GP10C
This item is no longer available. We have replaced it with:
Pentek PCC-1 Hexametaphosphate Cartridge for #10 Standard Housing

Pro Poly Guard Rust and Scale Preventer Cartridge Features:

  • Longevity: the cartridge alone will treat approximately 30,000 gallons of water (depending on water conditions)
  • NSF Certification to meet NSF/ANSI Standard 60 for drinking water additives
  • Efficiency: sequesters hard water and low levels of iron, reducing scale build up and hard water rust staining.
  • Odorless
  • Non-hazardous by WHMIS/OSHA criteria

GP10C Applications:

  • Reduces scale build up and hard water rust staining
  • Applicable to plumbing and water-using appliances
  • Drinking water- reduces the leaching of copper and lead into drinking water

Corrosion Control: The cartridge will hold 1.5 pounds of crystal and treat up to 30,000 gallons of water. These crystals will not dissolve completely and should be replaced in 30,000 gallon intervals or every 6 months to ensure product efficiency.


  • Comes in a 6-pack of 1.5 lb size cartridges
  • Fits a 10" standard whole house filter housing
  • Temperature range: 40-125 F
  • Melting point: 1200 F
  • pH: 7 (1% solution)
  • Appearance/Form: Glass-like/Crystals

Operating Conditions
40-125 °F
NSF/ANSI Standard 60
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