ISO INTERNATIONAL STANDARD 17997-2 IDF 29-2 First edition 2004-09-15 Milk Determination of casein-nitrogen content - Part 2: Direct method Lait - Détermination de la teneur en azote de caséine Partie 1: Méthode directe Reference numbers ISO 17997-2:2004(E) so IDF 29-2:2004(E) Copyright International Organization for Standardization @ ISO and IDF 2004 itted without license from IHS Not for Resale ISO 17997-2:2004(E) IDF 29-2:2004(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. Neither the ISo Central Secretariat nor the IDF accepts any liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation and IDF national committees. In the unlikely event that a problem relating to it is found, please inform the ISO Central Secretariat at the address given below. @ ISO and IDF 2004 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either isO or IDF at the respective address below. ISO copyright office International Dairy Federation Case postale 56 : CH-1211 Geneva 20 Diamant Building·Boulevard Auguste Reyers 80.B-1030 Brussels Tel. + 41 22 749 01 11 Tel. + 32 2 733 98 88 Fax + 41 22 749 09 47 Fax + 32 2 733 04 13 E-mail [email protected] E-mail [email protected] Web www.iso.org Web www.fil-idf.org Published in Switzerland yrgheatgazatiooSndadizati @ ISO and IDF 2004 - All rights reserved itted without license from IHS Not for Resale ISO 17997-2:2004(E) IDF 29-2:2004(E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical 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. rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 17997-2liDF 29-2 was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC5,Milkand milkproducts,andtheInternationalDairyFederation(IDF),in collaboration withAOAC International. It is being published jointly by ISO and IDF and separately by AOAC International. ISO 17997liDF 29 consists of the following parts, under the general title Milk - Determination of casein- nitrogencontent: Part 1: Indirect method (Reference method) Part 2: Direct method CopyrightIntenatinal Organization for standardizatin4 - All rights reserved ili ISO 17997-2:2004(E) IDF 29-2:2004(E) Foreword IDF (the International Dairy Federation) is a worldwide federation of the dairy sector with a National Standing Committees carrying out the technical work. IDF collaborates with ISO and AOAC International 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 least 50% of IDF National Committees casting a vote. ISO 17797-2liDF 29-2 was prepared by Technical Committee ISO/TC 34, Food product