20/30404876 DC

This standard 20/30404876 DC BS EN 12120. Chemicals used for treatment of water intended for human consumption. Sodium hydrogen sulfite is classified in these ICS categories:

• 71.100.80 Chemicals for purification of water

This document is applicable to sodium hydrogen sulfite used for treatment of water intended for human consumption. It describes the characteristics of sodium hydrogen sulfite and specifies the requirements and the corresponding test methods for sodium hydrogen sulfite. It gives information on its use in water treatment.