ISO INTERNATIONAL STANDARD 8534 Third edition 2017-02 Animal and vegetable fats and oils - Determination of water content - Karl Fischer method (pyridine free) Corps gras d'origines animale et vegétale - Détermination de la teneur en eau - Méthode de Karl Fischer (sans pyridine) Reference number IS0 8534:2017(E) International Organization for Standardization @ IS0 2017 ee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 mitted without license from IHS IS0 8534:2017(E) COPYRIGHT PROTECTED DOCUMENT 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 written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISOcopyrightoffice Ch. de Blandonnet 8 · CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Internatinir DrganizationforStandardization icensee-ZHEJIANG INSTOF STANDARDIZAoISQ 07 - All rights reserved Not for Resale, 2017/5/11 02:25:21 networking permited withoutlicense from IHS IS0 8534:2017(E) Contents Page Foreword .iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Principle ..1 5 Reagents. ..1 6 Apparatus ..2 7 Sampling. .2 8 Preparation of the test sample .2 9 Procedure .3 9.1 Titre. .3 9.2 Test portion 4 9.3 Determination ..5 10 Expression of results ..5 11 Precision ofthe method 11.1 Interlaboratory test. .6 11.2 Repeatability 11.3 Reproducibility ..6 12 Test report .6 Annex A (informative) Results of interlaboratory tests .7 Annex B (informative) Information and precision data on the use of the coulometric method Bibliography 10 iii icenSee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 without license from IHS