This standard describes aqua ammonia (liquid ammonium hydroxide) for use in the treatment of potable water, wastewater, or reclaimed water. It can be referenced in documents for purchasing and receiving aqua ammonia and can be used as a guide for testing the physical and chemical properties of aqua ammonia samples. The stipulations of this standard apply when this document has been referenced and then only to aqua ammonia used in the treatment of potable water, wastewater, or reclaimed water.