EN 16401:2013

Chemicals used for treatment of swimming pool water - Sodium chloride used for electrochlorinator systems

This European Standard is applicable only to sodium chloride used in electrochlorinator systems and not to mixtures with other chemicals used for treatment of swimming pool water. It describes the characteristics of sodium chloride used in electrochlorinator systems and specifies the requirements and the corresponding test methods for sodium chloride used in electrochlorinator systems. It gives information on its use in swimming water treatment. It also determines the rules relating to safe handling and use (see Annex A).

Produkte zur Aufbereitung von Schwimm- und Badebeckenwasser - Natriumchlorid für den Einsatz in Anlagen zur elektrochemischen Erzeugung von Chlor

Diese Europäische Norm gilt ausschließlich für Natriumchlorid, das in Anlagen zur elektrochemischen Erzeugung von Chlor zum Einsatz kommt, und nicht für Gemische mit anderen Chemikalien zur Aufbereitung von Schwimm  und Badebeckenwasser. Sie beschreibt die Eigenschaften von Natriumchlorid, das in Anlagen zur elektro¬chemischen Erzeugung von Chlor verwendet wird, und legt dafür die Anforderungen an und die entsprechenden Prüfverfahren für Natriumchlorid fest. Sie enthält Angaben zu dessen Anwendung in der Aufbereitung von Schwimm- und Badebeckenwasser. Sie legt darüber hinaus Regeln für die sichere Handhabung und Verwendung fest (siehe Anhang A).

Produits chimiques utilisés pour le traitement de l'eau des piscines - Chlorure de sodium utilisé avec les systèmes d'électrochloration

La présente Norme européenne s'applique uniquement au chlorure de sodium utilisé dans les systèmes d'électrochloration, et non aux mélanges avec d'autres substances chimiques utilisés pour le traitement de l'eau des piscines. Elle décrit les caractéristiques du chlorure de sodium utilisé dans les systèmes d'électrochloration et spécifie les exigences et les méthodes d’essai correspondantes. Elle fournit des informations pour son emploi dans le traitement de l’eau des piscines. Elle fixe également les règles relatives à la sécurité d'emploi et de manipulation (voir Annexe A).

Kemikalije, ki se uporabljajo za pripravo bazenske vode - Elektrokemijsko pridobivanje klora iz natrijevega klorida

Ta evropski standard se uporablja le za natrijev klorid, ki se uporablja v sistemih za elektrokemijsko pridobivanje klora in ne za mešanice z drugimi kemikalijami, ki se uporabljajo za pripravo bazenske vode. Opisuje značilnosti natrijevega klorida, ki se uporablja v sistemih za elektrokemijsko pridobivanje klora in določa zahteve in ustrezne preskusne metode za natrijev klorid, ki se uporablja v sistemih za elektrokemijsko pridobivanje klora. Podaja informacije za uporabo natrijevega klorida pri pripravi bazenske vode. Določa tudi pravila za varno ravnanje in uporabo.

General Information

• Status: Published
• Publication Date: 22-Oct-2013
• Withdrawal Date: 29-Apr-2014
• 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: 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
• Start Date: 04-Mar-2026
• Completion Date: 04-Mar-2026
• Ref Project: SIST EN 16401:2013 - Chemicals used for treatment of swimming pool water - Sodium chloride used for electrochlorinator systems

Relations

• Refers: EN 973:2009 - Chemicals used for treatment of water intended for human consumption - Sodium chloride for regeneration of ion exchangers
• Effective Date: 28-Jan-2026

Overview

EN 16401:2013 is a European Standard developed by CEN that specifies the requirements for sodium chloride specifically used in electrochlorinator systems for swimming pool water treatment. The purpose of this standard is to define the characteristics, purity criteria, and test methods for sodium chloride (NaCl) used to generate active chlorine via electrolysis in swimming pool applications. The document also provides essential information on handling, labelling, storage, and safe use of sodium chloride intended for this purpose.

EN 16401 helps pool operators, manufacturers, and suppliers ensure that the sodium chloride used for electrochlorinator systems meets stringent quality and safety standards. Compliance with this standard helps to maintain the effectiveness of water disinfection, and provides assurance regarding product consistency and safety.

Key Topics

• Product Characteristics: EN 16401 describes the physical and chemical properties of sodium chloride suitable for electrochlorinator systems, including appearance, purity, solubility, and relevant physical constants.
• Purity Requirements: The standard lays out minimum purity grades (Grade A and Grade B) for sodium chloride, with defined limits for moisture, insolubles, and chemical contaminants such as heavy metals.
• Testing Methods: Procedures for sampling and evaluating sodium chloride purity and composition are referenced, ensuring reliable and repeatable testing approaches.
• Labelling and Delivery: Clear requirements for product marking, packaging, labelling as per EU regulations, and transport to eliminate cross-contamination and ensure traceability.
• Safe Handling and Storage: Guidance on safe storage conditions, compatibility with other substances, and handling protocols to maintain product integrity and mitigate risks.
• General Use Information: Includes background on the origin of sodium chloride (rock salt, sea salt, evaporated salt), typical application forms, and its consumption rates in electrochlorination processes.

Applications

EN 16401 is crucial in contexts where sodium chloride is used to produce active chlorine for disinfecting swimming pools through on-site electrolysis. Key applications include:

• Swimming Pool Water Treatment: Ensures the sodium chloride used in electrochlorinator systems is of consistent, high quality, supporting effective and reliable chlorine generation for hygienic water maintenance.
• Public and Commercial Pools: Helps operators of public, municipal, hotel, and sports facility pools to comply with EU pool water quality and safety regulations.
• Pool Equipment Manufacturing: Guides manufacturers in selecting and recommending sodium chloride suitable for use in their electrochlorinator systems to maximize system performance and lifespan.
• Health and Safety Compliance: Assists pool operators in meeting national and EU requirements regarding the safe storage, handling, and labelling of water treatment chemicals.

Using compliant sodium chloride helps minimize potential impurities, reduces maintenance related to by-products in pool equipment, and supports safe disinfection processes.

Related Standards

• EN 973: Chemicals used for treatment of water intended for human consumption - Sodium chloride for regeneration of ion exchangers. Provides further testing and quality specifications for sodium chloride used in water treatment processes.
• Regulation (EC) No 1272/2008 (CLP Regulation): Pertains to the classification, labelling, and packaging of substances, including sodium chloride, ensuring hazard communication and safety throughout the supply chain.
• National Standards: EN 16401 is adopted as national standards across CEN member countries, harmonizing pool water treatment chemical quality throughout Europe.

Operators and suppliers are encouraged to refer to these related standards to ensure comprehensive compliance in all aspects of water treatment chemical management.

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By following EN 16401:2013, stakeholders in the swimming pool industry can ensure safer, more effective, and regulation-compliant water treatment using sodium chloride in electrochlorinator systems.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kemikalije, ki se uporabljajo za pripravo bazenske vode - Elektrokemijsko pridobivanje klora iz natrijevega kloridaProdukte zur Aufbereitung von Schwimm- und Badebeckenwasser - Natriumchlorid für den Einsatz in Anlagen zur elektrochemischen Erzeugung von ChlorProduits chimiques utilisés pour le traitement de l'eau des piscines - Chlorure de sodium utilisé avec les systèmes d'électrochlorationChemicals used for treatment of swimming pool water - Sodium chloride used for electrochlorinator systems71.100.80Chemicals for purification of water13.060.25Voda za industrijsko uporaboWater for industrial useICS:Ta slovenski standard je istoveten z:EN 16401:2013SIST EN 16401:2013en,fr,de01-december-2013SIST EN 16401:2013SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16401
October 2013 ICS 71.100.80 English Version
Chemicals used for treatment of swimming pool water - Sodium chloride used for electrochlorinator systems
Produits chimiques utilisés pour le traitement de l'eau des piscines - Chlorure de sodium utilisé avec les systèmes d'électrochloration
Produkte zur Aufbereitung von Schwimm- und Badebeckenwasser - Natriumchlorid für den Einsatz in Anlagen zur elektrochemischen Erzeugung von Chlor This European Standard was approved by CEN on 14 September 2013.
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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16401:2013: ESIST EN 16401:2013

General information on sodium chloride . 11 A.1 Origin . 11 A.2 Use . 11 A.3 General rules relating to safety . 11 Bibliography . 13
This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2014, and conflicting national standards shall be withdrawn at the latest by April 2014.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 16401:2013
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