The purpose of this standard is to provide the minimum requirements for sodium metabisulfite, including physical, chemical, sampling, packaging, shipping, and testing requirements.

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