BS-EN-ISO-11731-2-2008 BS-6068-4.18-2004.pdf
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1、BRITISH STANDARD BS EN ISO 11731-2:2008 BS 6068-4.18:2004 Water quality Detection and enumeration of Legionella Part 2: Direct membrane filtration method for waters with low bacterial counts ICS 07.100.20; 13.060.70 ? Copyright British Standards Institution Provided by IHS under license with BSI - U
2、ncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:44:39 MDTNo reproduction or networking permitted without license from IHS -,-,- BS EN ISO 11731-2:2008 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 20 July 2004 B
3、SI 2008 ISBN 978 0 580 60246 7 National foreword This British Standard is the UK implementation of EN ISO 11731-2:2008. It is identical with ISO 11731-2:2004. It supersedes BS ISO 11731-2:2004 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee EH/3, Wate
4、r quality, to Subcommittee EH/3/4, Microbiological methods. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Additional information This British Standard is not suitable for cooling tower waters. In addition, laboratories using this method should
5、satisfy themselves that the method works as well in their laboratory for their samples as BS 6068-4.12:1998 (ISO 11731:1998). This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard
6、 cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments 31 July 2008This corrigendum renumbers BS ISO 11731-2:2004 as BS EN ISO 11731-2:2008. Also, additional information added to national foreword Copyright British Standards Institution Provided b
7、y IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:44:39 MDTNo reproduction or networking permitted without license from IHS -,-,- EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11731-2 March 2008 ICS 07.100.20 English Version Water
8、 quality - Detection and enumeration of Legionella - Part 2: Direct membrane filtration method for waters with low bacterial counts (ISO 11731-2:2004) Qualit de leau - Recherche et dnombrement des Legionella - Partie 2: Mthode par filtration directe sur membrane pour les eaux faible teneur en bactri
9、es (ISO 11731-2:2004) Wasserbeschaffenheit - Nachweis und Zhlung von Legionellen - Teil 2: Direktes Membranfiltrationsverfahren mit niedriger Bakterienzahl (ISO 11731-2:2004) This European Standard was approved by CEN on 24 February 2008. CEN members are bound to comply with the CEN/CENELEC Internal
10、 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 Management Centre or to any CEN member.
11、 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 Management Centre has the same status as the official versions. CEN members
12、are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Swit
13、zerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No
14、. EN ISO 11731-2:2008: E Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:44:39 MDTNo reproduction or networking permitted without license from IHS -,-,- Foreword The text of ISO 11731-2:200
15、4 has been prepared by Technical Committee ISO/TC 147 “Water quality” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 11731-2:2008 by Technical Committee CEN/TC 230 “Water analysis” the secretariat of which is held by DIN. This European Standard shall be
16、 given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2008, and conflicting national standards shall be withdrawn at the latest by September 2008. Attention is drawn to the possibility that some of the elements of this docu
17、ment 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:
18、Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endor
19、sement notice The text of ISO 11731-2:2004 has been approved by CEN as a EN ISO 11731-2:2008 without any modification. BS EN ISO 11731-2:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21
20、:44:39 MDTNo reproduction or networking permitted without license from IHS -,-,- iii Contents Page 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 1 4 Safety 2 5 Principle. 2 6 Culture media and reagents. 2 7 Apparatus 6 8 Sampling 7 9 Procedure 7 10 Expression of results 9 11 Test rep
21、ort . 9 Annex ZA (informative) A-deviations.10 BS EN ISO 11731-2:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:44:39 MDTNo reproduction or networking permitted without license from I
22、HS -,-,- blank Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:44:39 MDTNo reproduction or networking permitted without license from IHS -,-,- I SO 4002 All irthgs ersedevr 1 Water quality
23、Detection and enumeration of Legionella Part 2: Direct membrane filtration method for waters with low bacterial counts WARNING Persons using this part of ISO 11731 should be familiar with normal laboratory practice. This part of ISO 11731 does not purport to address all of the safety problems, if an
24、y, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. 1 Scope This part of ISO 11731 describes a monitoring method for the isolation and enumeration of Legionella organis
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