ISO INTERNATIONAL STANDARD 663 Fifth edition 2017-02 Animal and vegetable fats and oils Determination of insoluble impurities content Corps gras d'origines animale et végétale Détermination de la teneur en impuretés insolubles Reference number IS0 663:2017(E) so International Organization for Standardization @ IS0 2017 ee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS under I Not for Resale, 2017/5/11 02:27:44 No reproduction or networking permitted without license from IHS IS0 663:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Internationai ibrg DrganizationforStandardization Licensee-ZHEJIANG INST OF STANDARDIzoISQ 7 - All rights reserved networking permited without license from IHS IS0 663:2017(E) Contents Page Foreword ..iv 1 Scope 2 Normative reference ..1 3 Terms and definitions 4 Principle 5 Reagents. ..1 6 Apparatus. ..2 7 Sampling. ..2 8 Preparation of test sample .2 9 Procedure. .2 9.1 Test portion ..2 9.2 Determination .3 10 Expression of results .4 11 Precision .4 11.1 Interlaboratory tests ..4 11.2 Repeatability .4 11.3 Reproducibility .4 12 Test report .4 Annex A (informative) Results of interlaboratory tests ..5 Bibliography iii icensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 d without license from IHS