BS ISO BRITISH STANDARD 8262-3:2005 Milk products and milk-based foods - Determination of fat content by the Weibull-Berntrop gravimetric method (Reference method) - Part 3: Special cases ICS 67.100.01 BSi NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards BSISO8262-3:2005 National foreword This British Standard reproduces verbatim IS0 8262-3:2005 and implements it as the UK national standard. It supersedes BS 7142-4:1989 which is withdrawn. The UK participation in its preparation 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 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 The British Standards which implement international publications referred to in this document may be found inthe 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 contract. Users are responsible for its correct application. Compliance with a British Standard does not ofitselfconfer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to vi, pages 1 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. This British Standard was Amendments issued since publication published under the authority of the Standards Policy and Amd. No. Date Comments Strategy Committee on 23 January 2006 C BSI 23 January 2006 ISBN0580471802 BSISO8262-3:2005 INTERNATIONAL ISO STANDARD 8262-3 IDF 124-3 Second edition 2005-11-01 Milk products and milk-based foods Determination of fat content by the Weibull-Berntrop gravimetric method (Reference method) - Part 3: Special cases Produits laitiers etproduits abasedelaitDeterminationde la teneur en matiere grasseparla methode gravimetrique Weibull-Berntrop (Méthode de reference) Partie 3:Casparticuliers Reference numbers ISO 8262-3:2005(E) IDF 124-3:2005(E) LSo i BSISO8262-3:2005 Contents Page Foreword Introduction vi 1 Scope 2 Terms and definitions 3 Principle. 4 Reagents and materials 5 Apparatus 6 Sampling... Procedure... 7.1 Preparationoftestsample. 7.2 Test portion... 7.3 Blank test...... 7.4 Preparationofextractionflask. 7.5 Determination... 8 Calculationand expression of results 9 Precision... 9.1 Interlaboratorytest 9.2 9.3 Reproducibility. 10 Notesonprocedure. 10.1 Blank teststo check the solvent and filterpapers 10.2 Blank test carried out simultaneously with the determination 11 Test report 8 Bibliography ii BSISO8262-3:2005 Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO member bodies). The work of preparing International Standards is normally carried out through and non-governmental, in liaison with IsO, also take part in the work. IsoO collaborates closely with the International Electro technical Commission (IEC) on all matters of electro technical standardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/lECDirectives,Part2 The main task of technical committees is to prepare International Standards. Draft International Standards adoptedbythe technical committeesarecirculated tothememberbodiesforvoting.Publicationas an International Standard requires approval by at least 75% of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject