ANSI/AWWA B506-06

This standard describes zinc orthophosphate (ZOP) corrosion inhibitor in dry and liquid forms for use in water supply service. The purpose of this standard is to provide minimum requirements for ZOP, including physical, chemical, packaging, shipping, and testing requirements. This standard can be referenced in specifications for purchasing and receiving ZOP and can be used as a guide for testing the physical and chemical properties of ZOP samples.