1、ICS 07.100.30Microbiology of food and animal feeding stuffsHorizontal method for the enumeration of Clostridium perfringensColony-count technique(ISO 7937 : 2004)English version of DIN EN ISO 7937Mikrobiologie von Lebensmitteln und Futtermitteln Horizontales Verfahren zur Zhlung von Clostridiumperfr
2、ingens Koloniezhlverfahren (ISO 7937 : 2004)A comma is used as the decimal marker.National forewordThis standard has been published in accordance with a decision taken by CEN/TC 275 to adopt, withoutalteration, International Standard ISO 7937 as a European Standard.The responsible German body involv
3、ed in its preparation was the Normenausschuss Lebensmittel undlandwirtschaftliche Produkte (Foodstuffs and Agricultural Products Standards Committee), Technical Com-mittee Mikrobiologische Lebensmitteluntersuchung einschlielich Schnellverfahren.The DIN Standards corresponding to the International St
4、andards referred to in clause 2 of the EN are asfollows:ISO Standard DIN StandardISO 6887-1 DIN EN ISO 6887-1ISO 6887-2 DIN EN ISO 6887-2ISO 6887-3 DIN EN ISO 6887-3ISO 6887-4 DIN EN ISO 6887-4ISO 8261 DIN EN ISO 8261AmendmentsThis standard differs from DIN EN 13401, June 1999 edition, in that preci
5、sion data based on the results ofan interlaboratory test have been included (cf. subclause 10.2).Previous editionDIN EN 13401: 1999-06.DEUTSCHE NORM November 2004DIN EN ISO 7937 No part of this standard may be reproduced without the prior permission ofDIN Deutsches Institut fr Normung e.V., Berlin.
6、Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).Normenausschuss Bauwesen (NABau) im DINEnglish price group 13www.din.dewww.beuth.de04.05 9609537Continued overleaf.Document comprises 19 pages.Supersedes DIN EN 13401,June 1999 edition.Page 2DI
7、N EN ISO 7937 : 2004-11National Annex NAStandards referred to(and not included in Normative references and Bibliography)DIN EN ISO 6887-1 Microbiology of food and animal feeding stuffs Preparation of test samples, initialsuspension and decimal dilutions for microbiological examination Part 1: Genera
8、l rulesfor the preparation of the initial suspension and decimal dilutions (ISO 6887-1 : 1999)DIN EN ISO 6887-2 Microbiology of food and animal feeding stuffs Preparation of test samples, initialsuspension and decimal dilutions for microbiological examination Part 2: Specific rulesfor the preparatio
9、n of meat and meat products (ISO 6887-2 : 2003)DIN EN ISO 6887-3 Microbiology of food and animal feeding stuffs Preparation of test samples, initialsuspension and decimal dilutions for microbiological examination Part 3: Specific rulesfor the preparation of fish and fishery products (ISO 6887-3 : 20
10、03)DIN EN ISO 6887-4 Microbiology of food and animal feeding stuffs Preparation of test samples, initialsuspension and decimal dilutions for microbiological examination Part 4: Specific rulesfor the preparation of products other than milk and milk products, meat and meat prod-ucts, and fish and fish
11、ery products (ISO 6887-4 : 2003)DIN EN ISO 8261 Milk and milk products General guidance for the preparation of test samples, initialsuspensions and decimal dilutions for microbiological examination (ISO 8261 : 2001)English versionICS 07.100.30 Supersedes EN 13401 : 1999.Management Centre: rue de Sta
12、ssart 36, B-1050 BrusselsEuropean Committee for StandardizationComit Europen de NormalisationEuropisches Komitee fr NormungMicrobiology of food and animal feeding stuffsHorizontal method for the enumeration ofClostridium perfringensColony-count technique(ISO 7937 : 2004) 2004. CEN All rights of expl
13、oitation in any form and by any meansreserved worldwide for CEN national members.Ref. No. EN ISO 7937 : 2004 EMicrobiologie des aliments Mtho-de horizontale pour le dnombrementde Clostridium perfringens Tech-nique par comptage des colonies(ISO 7937 : 2004)Mikrobiologie von Lebensmitteln undFuttermit
14、teln Horizontales Verfahrenzur Zhlung von Clostridium perfrin-gens Koloniezhlverfahren(ISO 7937 : 2004)This European Standard was approved by CEN on 2004-08-14.CEN members are bound to comply with the CEN/CENELEC Internal Regulationswhich stipulate the conditions for giving this European Standard th
15、e status of anational standard without any alteration.Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to anyCEN member.The European Standards exist in three official versions (English, French, German).A vers
16、ion in any other language made by translation under the responsibility of aCEN member into its own language and notified to the Management Centre hasthe same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, theCzech Republic, Denmark, Estonia
17、, Finland, France, Germany, Greece, Hungary,Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands,Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland, andthe United Kingdom.August 2004EN ISO 7937Page 2EN ISO 7937 : 2004ForewordInternational StandardISO 7
18、937 : 2004 Microbiology of food and animal feeding stuffs Horizontal method for the enumeration ofClostridium perfringens Colony-count technique,which was prepared by ISO/TC 34 Agricultural food products of the International Organization for Standardi-zation, has been adopted by Technical Committee
19、CEN/TC 275 Food analysis Horizontal methods, theSecretariat of which is held by DIN, as a European Standard.This European Standard shall be given the status of a national standard, either by publication of an identicaltext or by endorsement, and conflicting national standards withdrawn, by February
20、2005 at the latest.In accordance with the CEN/CENELEC Internal Regulations, the national standards organizations of the follow-ing countries are bound to implement this European Standard:Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,Iceland
21、, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal,Slovakia, Slovenia, Spain, Sweden, Switzerland, and the United Kingdom.Endorsement noticeThe text of the International Standard ISO 7937 : 2004 was approved by CEN as a European Standard withoutany modi
22、fication.23445551010101012141517Page 3EN ISO 7937 : 2004Page 4EN ISO 7937 : 2004Page 5EN ISO 7937 : 2004Page 6EN ISO 7937 : 2004Page 7EN ISO 7937 : 2004Page 8EN ISO 7937 : 2004Page 9EN ISO 7937 : 2004Page 10EN ISO 7937 : 2004Page 11EN ISO 7937 : 2004Page 12EN ISO 7937 : 2004Page 13EN ISO 7937 : 2004Page 14EN ISO 7937 : 2004Page 15EN ISO 7937 : 2004Page 16EN ISO 7937 : 2004Page 17EN ISO 7937 : 2004
