This European Standard is applicable to sodium thiosulfate used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements of sodium thiosulfate and refers to the corresponding analytical methods. It gives information for its use in water treatment.
EN 12125:2012 Referenced Document
EN ISO 3696:1995 Water for Analytical Laboratory Use- Specification and Test Methods (ISO 3696 : 1987)
ISO 10636:1994 Photography; processing chemicals; specifications for anhydrous sodium thiosulfate and sodium thiosulfate pentahydrate
ISO 22743:2006 Water quality - Determination of sulfates - Method by continuous flow analysis (CFA)
ISO 3165:1976 Sampling of chemical products for industrial use; Safety in sampling
ISO 5993:1979 Sodium hydroxide for industrial use; Determination of mercury content; Flameless atomic absorption spectrometric method
ISO 6206:1979 Chemical products for industrial use; Sampling; Vocabulary Bilingual edition
ISO 6353-1:1982 Reagents for chemical analysis; Part 1 : General test methods
ISO 8213:1986 Chemical products for industrial use; Sampling techniques; Solid chemical products in the form of particles varying from powders to coarse lumps
EN 12125:2012 history
2012EN 12125:2012 Chemicals used for treatment of water intended for human consumption - Sodium thiosulfate
2005EN 12125:2005 Chemicals Used for Treatment of Water Intended for Human Consumption - Sodium Thiosulfate
1998EN 12125:1998 Chemicals Used for Treatment of Water Intended for Human Consumption - Sodium Thiosulfate