BS EN ISO BRITISH STANDARD 21871:2006 Microbiology of food and animal feeding stuffs Horizontal method for the determination of low numbers of presumptive Bacillus cereus Most probable number technigue and detection method The European Standard EN IS0 21871:2006 has the status of a BritishStandard ICS 07.100.30 BSi NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards BS EN ISO 21871:2006 National foreword This British Standard is the official English language version of ENISO21871:2006.ItisidenticalwithISO21871:2006. The UK participation in its preparation was entrusted to Technical Committee AW/9, Microbiology, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references TheBritish Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled"International Standards Correspondence Index, or by using the“Search"facility of the BSIElectronic Catalogue or of British Standards Online. 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 does not ofitself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page, pages 1 to 14, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued sincepublication This British Standard was Amd. No. Date Comments published under the authority of the Standards Policy and Strategy Committee on 1 February 2006 BSI 1 February 2006 ISBN 0 580 47208 6 EN ISO 21871 EUROPEANSTANDARD NORMEEUROPEENNE EUROPAISCHENORM January 2006 ICS 07.100.30 English Version Microbiology of food and animal feeding stuffs - Horizontal method for the determination of low numbers of presumptive Bacillus cereus - Most probable number technique and detection method (ISO 21871:2006) Microbiologie des aliments - Methode horizontale pour le Mikrobiologie von Lebensmitteln und Futtermitteln - denombrement de Bacillus cereus presumes en petit Horizontales Verfahren zur Bestimmung niedriger Zahlen nombre - Technique du nombre le plus probable et von prasumtivem Bacillus cereus - Verfahren der methode de recherche (IS0 21871:2006) wahrscheinlichsten Keimzahl (MPN) und Nachweisverfahren (ISO 21871:2006) This European Standard was approved by CEN on28 November2005. 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. cer EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN