This European Standard is applicable to sodium thiosulphate used for treatment of water intended for human consumption .It describes the characteristics and specifies the requirements of sodium thiosulphate and refers to the corresponding analytical methods. It gives information for its use in water treatment..
Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
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