ISO INTERNATIONAL STANDARD 6492 First edition 1999-08-01 Animal feeding stuffs Determination of fat content Aliments des animaux - Détermination de la teneur en matiere grasse TSO Referencenumber ISO 6492:1999(E) IHSunder Not for Resale ISO6492:1999(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO liaison with 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/lEC Directives, Part 3. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 6492 was prepared by Technical Committee ISO/TC 34, Agricultural food products, Subcommittee SC 10, Animalfeeding stuffs. Annex A of this International Standard is for information only. @ISO1999 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 thepublisher. International OrganizationforStandardization Case postale 56. CH-1211 Geneve 20 · Switzerland Internet [email protected] Printed in Switzerland tional Organization for Standardizatior INTERNATIONALSTANDARD ISO ISO6492:1999(E) Animal feeding stuffs Determination of fat content 1 Scope This International Standard specifies a method for the determination of the fat content of animal feeding stuffs. The method is applicable to animal feeding stuffs except oilseeds and oilseed residues For the purposes of this method, the following two categories of animal feeding stuffs are distinguished. Samples of Category B: straight feeds of animal origin including milk products; straight feeds of vegetable origin from which fats cannot be extracted without prior hydrolysis; in particular: gluten, yeast, soya and potato proteins, and heat-treated feeds; stems from these products. Category A: animal feeding stuffs not mentioned under category B. NOTE For oilseed residues, a method for the determination of the "oil content" by hexane extraction is specified in ISO 734-1 [2], whereas a method for the determination of the "oil content" by diethyl ether extraction is specified in ISO 736 [3]. For oilseeds, a method for the determination of the "oil content" by hexane extraction is specified in IsO 659 [1]. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to undated references, the latest edition of the normative document referred to applies. Members of IsO and IEC maintain registers of currently valid International Standards. IsO 3696, Water for analytical laboratory use-Specification and test methods. IsO 6498, Animal feeding stuffs Preparation of test samples. 3 Term and definition For the purposes of this International Standard, the following term and definition apply. 3.1 fatcontent mass fraction of substances extracted from the sample by the procedure specified in this International Standard Copyright Inte ational Organization for Standardization