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KOSTER announces NSF/ANSI-61 approval - [2011-11-30] KOSTER American is pleased to announce that the KOSTER KB-Pur® Gel is now NSF/ANSI-61 approved for drinking water. KOSTER KB-Pur® Gel is a solvent-free, water activated polyurethane gel. Depending on the amount of water added, a highly elastic, waterproof, foam-hydro-gel is formed. Even after dilutions up to 1:10, the material is still resistant to pressurized water. It does not contain free isocyanides and is chemically stable after reacting. It does not contribute to corrosion and does not emit groundwater polluting substances.
With NSF approval, this means the KOSTER KB-Pur® Gel works as it is supposed to, does not support bacterial growth, and the potable water is safe for drinking when it comes in contact with the material.
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