ISO-5544-2008.pdf
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1、 Reference numbers ISO 5544:2008(E) IDF 89:2008(E) ISO and IDF 2008 INTERNATIONAL STANDARD ISO 5544 IDF 89 Second edition 2008-01-15 Caseins Determination of “fixed ash” (Reference method) Casines Dtermination des cendres fixes (Mthode de rfrence) Copyright International Organization for Standardiza
2、tion Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 02/16/2008 02:13:00 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 5544:2008(E) IDF 89:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In
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5、rs 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 PROTEC
6、TED DOCUMENT ISO and IDF 2008 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
7、 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 copyrightiso.org E-mail infofil-idf.org We
8、b www.iso.org Web www.fil-idf.org Published in Switzerland ii ISO and IDF 2008 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 02/16/2008 02:13:00 MSTNo reproduction
9、 or networking permitted without license from IHS -,-,- ISO 5544:2008(E) IDF 89:2008(E) ISO and IDF 2008 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Interna
10、tional 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
11、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
12、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 t
13、he 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 5544IDF 89 was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 5, Milk and milk products, and
14、the International Dairy Federation (IDF). It is being published jointly by ISO and IDF. This second edition of ISO 5544IDF 89 cancels and replaces the first edition (ISO 5544:1978), of which it constitutes a minor revision. Copyright International Organization for Standardization Provided by IHS und
15、er license with ISO Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 02/16/2008 02:13:00 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 5544:2008(E) IDF 89:2008(E) iv ISO and IDF 2008 All rights reserved Foreword IDF (the International Dairy Federatio
16、n) is a non-profit organization representing the dairy sector worldwide. IDF membership comprises National Committees in every member country as well as regional dairy associations having signed a formal agreement on cooperation with IDF. All members of IDF have the right to be represented at the ID
17、F Standing Committees carrying out the technical work. IDF collaborates with ISO 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
18、 voting. Publication as an International Standard requires approval by at least 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
19、any or all such patent rights. ISO 5544IDF 89 was prepared by the International 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 former Joint ISO-IDF-AOAC
20、Group of Experts (E11-E701) which is now part of the Joint ISO-IDF Action Team on Physical properties and rheological tests of the Standing Committee on Minor components and characterization of physical properties. This edition of ISO 5544IDF 89 cancels and replaces IDF 89:1979, of which it constitu
21、tes a minor revision. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 02/16/2008 02:13:00 MSTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDAR
22、D ISO 5544:2008(E) IDF 89:2008(E) ISO and IDF 2008 All rights reserved 1 Caseins Determination of “fixed ash” (Reference method) 1 Scope This International Standard specifies a reference method for the determination of the “fixed ash” of caseins, as a percentage by mass, obtained by acid precipitati
23、on or lactic fermentation, of ammonium caseinates, of their mixtures with rennet casein and with caseinates, and of caseins of unknown type. NOTE For the determination of ash of rennet caseins and caseinates (except ammonium caseinates), see ISO 5545IDF 902. 2 Normative references The following refe
24、renced 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 (including any amendments) applies. ISO 648, Laboratory glassware Single volume pipettes ISO 3310-1, Te
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