ISO INTERNATIONAL STANDARD 12937 First edition 2000-11-01 Petroleum products Determination of water Coulometric Karl Fischer titration method ProduitspétroliersDosagede I'eau-Methodede titrage Karl Fischer par coulométrie Reference number ISO 12937:2000(E) ISO @ ISO 2000 IHS unde Not for Resale ISO 12937:2000(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 area. Adobe is atrademarkofAdobeSystems 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. In the unlikely event @ISO2000 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 at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56.CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.ch Printed in Switzerland Iso2000-All rightsreserved itted without license from IHS Not for Resale ISO 12937:2000(E) Contents Page Foreword. iv 1 Scope 2 Normative references. 3 Principle... 4 Chemicals and materials... 5 Apparatus.... 6 Sampling and sample preparation (see annex A) 7 Apparatus preparation . 8 Apparatus check test .. 9 Procedure 10 Calculation. 11 Expression of results 12 Precision.. 6 13 Test report. Annex A (normative) Sample handling ... Annex B (informative) Alternative test method using volumetric determination of sample size ..... ili IHS under from IHS Not for Resal