EN ISO 11731:2017

Water quality - Enumeration of Legionella (ISO 11731:2017)

ISO 11731:2017 specifies culture methods for the isolation of Legionella and estimation of their numbers in water samples.
These methods are applicable to all kinds of water samples including potable, industrial, waste and natural waters. These methods can be used for water related matrices, e.g. biofilms, sediments, etc.
Not all Legionella species are culturable; therefore, the methods described in this document do not recover all species of Legionella.

Wasserbeschaffenheit - Zählung von Legionellen (ISO 11731:2017)

Dieses Dokument legt Kultivierungsverfahren zur Isolierung von Legionella und Abschätzung ihrer Anzahl in Wasserproben fest.
Diese Verfahren sind für alle Arten von Wasser, einschließlich Trinkwasser, Brauchwasser, Abwasser und natürliche Gewässer, anwendbar. Diese Verfahren können für wasserhaltige Matrices, z. B. Biofilme, Sedimente usw., verwendet werden.
Nicht alle Legionella-Spezies sind kultivierbar; deshalb werden mit den in dem vorliegenden Dokument beschriebenen Verfahren nicht alle Spezies von Legionella gefunden.

Qualité de l'eau - Dénombrement des Legionella (ISO 11731:2017)

ISO 11731:2017 spécifie des méthodes de culture pour l'isolement des Legionella et leur dénombrement dans des échantillons d'eau.
Ces méthodes sont applicables à tous les types d'échantillons d'eau, y compris les eaux potables, industrielles, usées et naturelles. Elles peuvent également être utilisées pour les matrices liées à l'eau (biofilms, sédiments, etc.).
Toutes les espèces de Legionella n'étant pas cultivables, les méthodes décrites dans le présent document peuvent ne pas retrouver la totalité des espèces de Legionella.

Kakovost vode - Ugotavljanje števila legionel (ISO 11731:2017)

Ta dokument določa metode gojenja za izolacijo legionele in oceno njenega števila v vzorcih vode.
Te metode se uporabljajo za vse vrste vzorcev vode, vključno s pitnimi, industrijskimi, odpadnimi in
naravnimi vodami. Te metode se lahko uporabljajo za matrice, povezane z vodo, npr. biofilme, sedimente itd.
Nekaterih vrst legionele ni mogoče gojiti, tako da metode, opisane v tem dokumentu, ne
zajamejo vseh vrst legionele.

General Information

• Status: Published
• Publication Date: 06-Jun-2017
• Withdrawal Date: 30-Dec-2017
• ICS: 07.100.20 - Microbiology of water
• Technical Committee: CEN/TC 230 - Water analysis
• Drafting Committee: CEN/TC 230 - Water analysis
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 07-Jun-2017
• Completion Date: 07-Jun-2017
• Ref Project: SIST EN ISO 11731:2017 - Water quality - Enumeration of Legionella (ISO 11731:2017)

Relations

• Replaces: EN ISO 11731-2:2008 - Water quality - Detection and enumeration of Legionella - Part 2: Direct membrane filtration method for waters with low bacterial counts (ISO 11731-2:2004)
• Effective Date: 14-Jun-2017

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 11731:2017
01-december-2017
1DGRPHãþD
SIST EN ISO 11731-2:2008
Kakovost vode - Ugotavljanje števila legionel (ISO 11731:2017)
Water quality - Enumeration of Legionella (ISO 11731:2017)
Wasserbeschaffenheit - Zählung von Legionellen (ISO 11731:2017)
Qualité de l'eau - Dénombrement des Legionella (ISO 11731:2017)
Ta slovenski standard je istoveten z: EN ISO 11731:2017
ICS:
07.100.20 Mikrobiologija vode Microbiology of water
SIST EN ISO 11731:2017 en,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 11731:2017

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SIST EN ISO 11731:2017


EN ISO 11731
EUROPEAN STANDARD

NORME EUROPÉENNE

June 2017
EUROPÄISCHE NORM
ICS 07.100.20 Supersedes EN ISO 11731-2:2008
English Version

Water quality - Enumeration of Legionella (ISO
11731:2017)
Qualité de l'eau - Dénombrement des Legionella (ISO Wasserbeschaffenheit - Zählung von Legionellen (ISO
11731:2017) 11731:2017)
This European Standard was approved by CEN on 12 February 2017.

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, Serbia, 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
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11731:2017 E
worldwide for CEN national Members.

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SIST EN ISO 11731:2017
EN ISO 11731:2017 (E)
Contents Page
European foreword . 3

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SIST EN ISO 11731:2017
EN ISO 11731:2017 (E)
European foreword
This document (EN ISO 11731:2017) has been prepared by Technical Committee ISO/TC 147 "Water
quality" in collaboration with Technical Committee CEN/TC 230 “Water analysis” the secretariat of
which is held by DIN.
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 December 2017, and conflicting national standards
shall be withdrawn at the latest by December 2017.
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.
This document supersedes EN ISO 11731-2:2008.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 11731:2017 has been approved by CEN as EN ISO 11731:2017 without any modification.

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SIST EN ISO 11731:2017

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SIST EN ISO 11731:2017
INTERNATIONAL ISO
STANDARD 11731
Second edition
2017-05
Water quality — Enumeration of
Legionella
Qualité de l’eau — Dénombrement des Legionella
Reference number
ISO 11731:2017(E)
©
ISO 2017

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SIST EN ISO 11731:2017
ISO 11731:2017(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this
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