Poly Guard Liquid

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SCALE & RUST PREVENTER PREVENT HARD WATER STAINS Pro Poly Guard Scale & Rust Preventer (Liquid) is specifically formulated to prevent hard water stains, including scale and iron st aining in commercial, industrial and residential potable water applications. Poly Guard forms a protective coating on metal and plastic surfaces preventing hard water stains, scale, corrosion and copper leaching. As a bonus, Poly Guard also protects pumping pipes and fixtures from calcium and scale buildup. To eliminate hard water stains, simply inject Poly Guard by chemical feed pump into the raw water system as close to the source as possible. This product is NSF Certified to meet NSF/ANSI Standard 60 for drinking water additives. Show more