BS-EN-ISO-1211-1995 BS-1741-3-1995.pdf
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1、BRITISH STANDARD BS EN ISO 1211:1995 BS 1741-3: 1995 Milk Determination of fat content Gravimetric method (reference method) The European Standard EN ISO 1741:1995 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:57:39 GMT+00:00 2006, Uncontrolled Copy,
2、(c) BSI BS EN ISO 1211:1995 This British Standard, having been prepared under the direction of the Consumer Products and Services Sector Board, was published under the authority of the Standards Board and comes into effect on 15 August 1995 BSI 07-1999 The following BSI references relate to the work
3、 on this standard: Committee reference AW/5 Draft announced in BSI News December 1993 ISBN 0 580 24014 2 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee AW/5, Chemical analysis of milk and milk products, upon which the fo
4、llowing bodies were represented: Association of Public Analysts Department of Trade and Industry (Laboratory of the Government Chemist) Intervention Board Ministry of Agriculture, Fisheries and Food Royal Society of Chemistry Society of Dairy Technology Amendments issued since publication Amd. No.Da
5、teComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:57:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 1211:1995 BSI 07-1999i Contents Page Committees responsibleInside front cover National forewordii Foreword2 0Introduction3 1Scope and field of application3 2References3 3De
6、finition3 4Principle3 5Reagents3 6Apparatus4 7Sampling4 8Procedure4 9Expression of results7 10Notes on procedure7 11Test report8 Annex A Alternative procedure using fat-extraction tubes with siphon or wash-bottle fittings9 Figure 1 Before decantation6 Figure 2 After decantation6 Figure 3 Examples of
7、 extraction tubes10 List of referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:57:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 1211:1995 ii BSI 07-1999 National foreword This British Standard has been prepared by Technical Committee AW/5 and is the Engli
8、sh language version of EN ISO 1211:1995 Milk Determination of fat content Gravimetric method (Reference method), published by the European Committee for Standardization (CEN). It is identical with ISO 1211:1984 published by the International Organization for Standardization (ISO) in cooperation with
9、 the International Dairy Federation (IDF) and the Association of Official Analytical Chemists (AOAC), and in the preparation of which the UK played a full part. It supersedes BS 1741-3:1987 which is withdrawn. A British Standard does not purport to include all the necessary provisions of a contract.
10、 Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references Publication referred toCorresponding British Standard ISO 707:1985BS 809:1985 Methods for sampling of milk and mil
11、k products ISO 3889:1977BS 5522:1987 Specification for milk and milk products Determination of fat content Mojonnier-type fat extraction flasks Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, pages 2 to 10, an inside back cover an
12、d a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:57:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN S
13、TANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1211 June 1995 ICS 67.100.10 Descriptors: Dairy products, milk, agricultural products, determination of fats, gravimetric analysis, chemical analysis English version Milk Determination of fat content Gravimetric method (Reference method) (ISO 1211:1984)
14、 Lait Dtermination de la teneur en matire grasse Mthode gravimtrique (Mthode de rfrences) (ISO 1211:1984) Milch Bestimmung des Fettgehaltes Gravimetrisches Verfahren (Referenzverfahren) (ISO 1211:1984) This European Standard was approved by CEN on 1995-02-05. CEN members are bound to comply with the
15、 requirements of 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 Ce
16、ntral 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 a
17、s the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit E
18、uropen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1995 Copyright reserved to CEN members Ref. No. EN ISO 1211:1995 E Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:57:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 1211:19
19、95 BSI 07-1999 2 Foreword The text of the International Standard from ISO/TC 34, Agricultural food products, of the International Organization for Standardization (ISO) has been taken over as a European Standard by the Technical Committee CEN/TC 302, Milk and milk products Methods of sampling and an
20、alysis. 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 1995, and conflicting national standards shall be withdrawn at the latest by December 1995. According to the CEN/CENELEC Internal R
21、egulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldu
22、n, na, Sun Nov 19 13:57:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 1211:1995 BSI 07-19993 0 Introduction This International Standard constitutes a revision of ISO/R 1211. Attempts to produce a single International Standard specifying the use of the Rse-Gottlieb method applicable to all mil
23、k products have been found impracticable for the time being. Therefore, it has been decided to revise and harmonize the existing standardized methods for individual products or groups of products and to standardize similar methods for those products for which methods had not been prepared previously
24、. The main modifications as compared to ISO/R 1211 are: a) preference is given to the use of Mojonnier-type fat-extraction flasks and the use of a centrifuge to separate the solvent layers; b) addition of ethanol before the second extraction; c) emphasis is placed on the necessity of cooling the fat
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