DIN EN 974-2004 Chemicals used for treatment of water intended for human consumption - Phosphoric acid German version EN 974 2003《人类生活用水处理用化学试剂 磷酸》.pdf
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1、ICS 71.100.80Chemicals used for treatment of water intended forhuman consumptionPhosphoric acidEnglish version of DIN EN 974Produkte zur Aufbereitung von Wasser fr den menschlichenGebrauch PhosphorsureEuropean Standard EN 974 : 2003 has the status of a DIN Standard.A comma is used as the decimal mar
2、ker.National forewordThis standard has been prepared by CEN/TC 164 Water supply (Secretariat: France).The responsible German body involved in its preparation was the Normenausschuss Wasserwesen (WaterPractice Standards Committee), Technical Committee Wasseraufbereitung.Users of this standard should
3、note that national regulations exist in Germany dealing with the characteristicsand treatment of water for human consumption, such as the Lebensmittel- und Bedarfsgegenstndegesetz(German Foodstuffs Act) and the Verordnung zur Novellierung der Trinkwasserverordnung (GermanRegulation amending the Germ
4、an Drinking Water Regulation).AmendmentsThis standard differs from the December 1997 edition in that the specifications have been harmonized withthose given in EU Directive 98/83/EC and references have been updated.Previous editionDIN EN 974: 1997-12.National Annex NADocuments referred to(and not in
5、cluded in Normative references and Bibliography)Verordnung zur Novellierung der Trinkwasserverordnung (German Regulation amending the German DrinkingWater Regulation), as of 21 May 2001, BGBl. (German Federal Law Gazette) I, No. 24, p. 959980Lebensmittel- und Bedarfsgegenstndegesetz, as of 9 Septemb
6、er 1997, BGBl. I, No. 63, pp. 22962319DEUTSCHE NORM January 2004DIN EN 974 No part of this standard may be reproduced without the prior permission ofDIN Deutsches Institut fr Normung e.V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Norm
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