BS EN 1421:2022

This standard BS EN 1421:2022 Chemicals used for treatment of water intended for human consumption. Ammonium chloride is classified in these ICS categories:

• 13.060.20 Drinking water
• 71.100.80 Chemicals for purification of water

This document is applicable to ammonium chloride used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements of ammonium chloride and refers to the corresponding analytical methods. It gives information for its use in water treatment. It also determines the rules relating to safe handling and use of ammonium chloride (see Annex B).