ISO INTERNATIONAL STANDARD 8070 IDF 119 Second edition 2007-08-15 Milk and milk products Determination of calcium, sodium, potassium and magnesium contents s Atomic absorption spectrometric method Lait et produits laitiers Détermination des teneurs en calcium, sodium, potassium et magnésium Methode spectrometrique par absorptionatomique Reference numbers ISO 8070:2007(E) IDF 119:2007(E) @ ISO and IDF 2007 y IHS under ted without license from IHS Not for Resale ISO 8070:2007(E) IDF 119:2007(E) PDF disclaimer 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. Adobeis atrademarkof AdobeSystems 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 parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by Iso member bodies 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. COPYRIGHT PROTECTED DOCUMENT @ ISO and IDF 2007 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 Copyrgh Interatinal Oorganization for Standardization @ISO and IDF 2007-All rights reserved vided by IHS under I without license from IHS Not for Resale ISO 8070:2007(E) IDF119:2007(E) Contents Page Foreword. iv Foreword. 1 Scope 2 Normative references 3 Terms and definitions 4 Principle. 5 Reagents 6 Apparatus. 7 Sampling 8 Preparation of test sample. 8.1 Milk and whey. 8.2 Buttermilk 8.3 Yogurt 8.4 Cream 8.5 Dried milk. 8.6 Butter.... 8.7 Cheese.. 8.8 Caseins and caseinates 9 Procedure. 9.1 Test portion... 9.2 Decomposition of organic matter 9.3 Determination.... 10 Calculation and expression of results. 10.1 Calculation... 8 10.2 Expression of test results. 9 11 Precision 11.1 Repeatability... 9 11.2 Reproducibility. 12 Test report 10 Annex A (informative) Interlaboratory trials 11 Bibliography. .14 Copyright Intemational Organzatinfr standadzain7-All rights reserved ii Not for Resale ISO 8070:2007(E) IDF 119:2007(E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards IsO technical committees. Each member body interested in a subject for which a technical committee has and non-governmental, in liaison with isO, also take part in the work. IsO collaborates closely with the InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. 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. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rig