This standard describes sodium tripolyphosphate for use in the treatment of potable water, wastewater, and reclaimed water. It can be referenced in documents for purchasing and receiving sodium tripolyphosphate and can be used as a guide for testing the physical and chemical properties of sodium tripolyphosphate samples. The stipulations of this standard apply when this document has been referenced and only to sodium tripolyphosphate used in the treatment of potable water, wastewater, and reclaimed water.