Full Description The purpose of this standard is to provide the minimum requirements for sodium hydroxide, including physical, chemical, sampling, testing, packaging, and shipping requirements. This standard can be referenced in documents for purchasing and receiving sodium hydroxide and can be used as a guide for testing the physical and chemical properties of sodium hydroxide samples. The stipulations of this standard apply when this document has been referenced and then only to sodium hydroxide used in the treatment of potable water, wastewater, or reclaimed water.