This European Standard is applicable to sodium chlorite used for treatment of water intended for human consumption. It describes the characteristics of sodium chlorite and specifies the requirements and the corresponding test methods for sodium chlorite. It gives information on its use in water treatment.
EN 938:2009 Referenced Document
EN 1483 Water quality - Determination of mercury - Method using atomic absorption spectrometry
EN ISO 3696 Water for Analytical Laboratory Use- Specification and Test Methods (ISO 3696 : 1987)
ISO 3165 Sampling of chemical products for industrial use; Safety in sampling
ISO 6206 Chemical products for industrial use; Sampling; Vocabulary Bilingual edition
ISO 8288:1986 Water quality; Determination of cobalt, nickel, copper, zinc, cadmium and lead; Flame atomic absorption spectrometric methods
ISO 9174 Water quality - Determination of chromium - Atomic absorption spectrometric methods
EN 938:2009 history
2019EN 938:2016/PRA1:2019 Chemicals used for treatment of water intended for human consumption - Sodium chlorite
2016EN 938:2016 Chemicals used for treatment of water intended for human consumption - Sodium chlorite
2009EN 938:2009 Chemicals used for treatment of water intended for human consumption - Sodium chlorite
1999EN 938:1999 Chemicals Used for Treatment of Water Intended for Human Consumption - Sodium Chlorite