EN 12125:2005

Chemicals used for treatment of water intended for human consumption - Sodium thiosulfate

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..

Produkte zur Aufbereintung von Wasser für den menschlichen Gebrauch - Natriumthiosulfat

Diese Europäische Norm gilt für Natriumthiosulfat zur Aufbereitung von Wasser für den menschlichen
Gebrauch. Sie beschreibt die Eigenschaften von Natriumthiosulfat, legt die Anforderungen an
Natriumthiosulfat fest und verweist auf die entsprechenden Analysenverfahren. Sie gibt Informationen über
die Anwendung von Natriumthiosulfat in der Wasseraufbereitung.

Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Thiosulfate de sodium

La présente Norme européenne s�applique au thiosulfate de sodium utilisé pour le traitement de l�eau
destinée à la consommation humaine. Elle décrit les caractéristiques et spécifie les exigences du
thiosulfate de sodium et les méthodes d'analyses correspondantes. Elle donne des informations pour son
emploi dans le traitement de l'eau.

Kemikalije, ki se uporabljajo za pripravo pitne vode - Natrijev tiosulfat

General Information

• Status: Withdrawn
• Publication Date: 21-Jun-2005
• Withdrawal Date: 13-Nov-2012
• ICS: 71.100.80 - Chemicals for purification of water
• Technical Committee: CEN/TC 164 - Water supply
• Drafting Committee: CEN/TC 164/WG 9 - Drinking water treatment
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 14-Nov-2012
• Completion Date: 14-Nov-2012
• Directive: 305/2011 - 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
• Directive: 89/106/EEC - Construction products
• Ref Project: SIST EN 12125:2005 - Chemicals used for treatment of water intended for human consumption - Sodium thiosulfate

Relations

• Replaces: EN 12125:1998 - Chemicals used for treatment of water intended for human consumption - Sodium thiosulfate
• Effective Date: 22-Dec-2008
• Replaced By: EN 12125:2012 - Chemicals used for treatment of water intended for human consumption - Sodium thiosulfate
• Effective Date: 08-Jan-2011

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kemikalije, ki se uporabljajo za pripravo pitne vode - Natrijev tiosulfatProdukte zur Aufbereintung von Wasser für den menschlichen Gebrauch - NatriumthiosulfatProduits chimiques utilisés pour le traitement de l'eau destinée a la consommation humaine - Thiosulfate de sodiumChemicals used for treatment of water intended for human consumption - Sodium thiosulfate71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 12125:2005SIST EN 12125:2005en01-september-2005SIST EN 12125:2005SLOVENSKI
STANDARDSIST EN 12125:20001DGRPHãþD



SIST EN 12125:2005



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12125
June 2005 ICS 71.100.80
Supersedes EN 12125:1998
English version
Chemicals used for treatment of water intended for human consumption - Sodium thiosulfate
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Thiosulfate de sodium
Produkte zur Aufbereintung von Wasser für den menschlichen Gebrauch - Natriumthiosulfat This European Standard was approved by CEN on 12 May 2005.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2005 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12125:2005: ESIST EN 12125:2005



EN 12125:2005 (E) 2 Contents Page Foreword.3 Introduction.4 1 Scope.5 2 Normative references.5 3 Description.5 4 Purity criteria.7 Table 1 – Chemical parameters.8 5 Test methods.8 Table 2 - Procedures for the determination of chemical parameters.9 Figure 1 — Calculation of the element concentration in the test solution.11 Figure 2 – Calculation of the element concentration in the blank solution.12 Table 3 — Standard solution.14 6 Labelling – Transportation – Storage.14 Annex A (informative)
General information on sodium thiosulfate.16 Bibliography.18
SIST EN 12125:2005



EN 12125:2005 (E) 3 Foreword This European Standard (EN 12125:2005) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a nation
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