BS-ISO-6730-2005.pdf
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1、BRITISH STANDARD BS ISO 6730:2005 Milk Enumeration of colony-forming units of psychrotrophic microorganisms Colony-count technique at 6,5 C ICS 07.100.30 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 6730:2005 This British Standar
2、d was published under the authority of the Standards Policy and Strategy Committee on 7 November 2005 BSI 7 November 2005 ISBN 0 580 46815 1 National foreword This British Standard reproduces verbatim ISO 6730:2005 and implements it as the UK national standard. The UK participation in its preparatio
3、n was entrusted to Technical Committee AW/5, Chemical analysis of milk and milk products, 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 inter
4、ests 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 The British Standards which implement international publications referred to in th
5、is document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a co
6、ntract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 8, an in
7、side back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Refe
8、rence numbers ISO 6730:2005(E) IDF 101:2005(E) INTERNATIONAL STANDARD ISO 6730 IDF 101 Second edition 2005-09-15 Milk Enumeration of colony- forming units of psychrotrophic microorganisms Colony-count technique at 6,5 C Lait Dnombrement des units formant colonie de micro-organismes psychrotrophes Te
9、chnique par comptage des colonies 6,5 C BS ISO 6730:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 6730:2005 iii Conte
10、nts Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Principle. 1 5 Diluents and culture medium 2 5.1 General. 2 5.2 Basic materials 2 5.3 Diluents for general use . 2 5.4 Distribution, sterilization and storage 2 5.5 Culture medium. 2 6 Apparatus and glassware 3
11、7 Sampling 4 8 Procedure 4 8.1 General. 4 8.2 Preparation of the test sample and primary dilution 4 8.3 Further decimal dilutions. 4 8.4 Duration of the procedure 4 8.5 Inoculation and incubation 4 8.6 Interpretation. 5 9 Expression of results . 5 10 Repeatability 6 11 Test report . 7 Bibliography .
12、 8 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 6730:2005 iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Intern
13、ational Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with
14、 ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical
15、 committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to
16、the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 6730IDF 101 was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 5, Milk and milk products, an
17、d the International Dairy Federation (IDF). It is being published jointly by ISO and IDF. This edition of ISO 6730IDF 101 cancels and replaces ISO 6730:1992, of which it constitutes a minor revision. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:43 GMT+00:00 2006, Uncontrolled Copy, (
18、c) BSI v Foreword IDF (the International Dairy Federation) is a worldwide federation of the dairy sector with a National Committee in every member country. Every National Committee has the right to be represented on the IDF Standing Committees carrying out the technical work. IDF collaborates with I
19、SO in the development of standard methods of analysis and sampling for milk and milk products. Draft International Standards adopted by the Action Teams and Standing Committees are circulated to the National Committees for voting. Publication as an International Standard requires approval by at leas
20、t 50 % of the IDF National Committees casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IDF shall not be held responsible for identifying any or all such patent rights. ISO 6730IDF 101 was prepared by the Internation
21、al Dairy Federation (IDF) and Technical Committee ISO/TC 34, Food products, Subcommittee SC 5, Milk and milk products. It is being published jointly by IDF and ISO. All work was carried out by the Joint ISO/IDF/AOAC Group of Experts on Non-pathogenic contaminants with classical techniques (E 22), un
22、der the aegis of its chairman, Mr H. Asperger (AT). This edition cancels and replaces IDF 101A:1991. BS ISO 6730:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:43 GMT+0
23、0:00 2006, Uncontrolled Copy, (c) BSI 1 Milk Enumeration of colony-forming units of psychrotrophic microorganisms Colony-count technique at 6,5 C 1 Scope This International Standard specifies a method for the enumeration of colony-forming units (CFU) of psychrotrophic microorganisms in raw and heat-
24、treated milk by means of the colony-count technique at 6,5 C. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document
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