ISO INTERNATIONAL STANDARD 6250 Second edition 1997-12-15 Petroleum products Determination of the water reaction of aviation fuels Produits pétroliers - Détermination de la réaction a I'eau des carburants aviation ISO Reference number ISO 6250:1997(E) py IHS under lic Not for Resale ISO 6250:1997(E) Foreword IsO (the International Organization for Standardization) is a worldwide preparing International Standards is normally carried out through iso technical committees. Each member body interested in a subject for which atechnicalcommitteehasbeenestablishedhastherighttoberepresented on that committee. International organizations, governmental and non- governmental, in liaison with IsO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. 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. International Standard iSO 6250 was prepared by Technical Committee ISO/TC 28, Petroleum products. This second edition cancels and replaces the first edition (IsO 6250:1982), which has been technically revised. ?ISO1997 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 the publisher. International OrganizationforStandardization Case postale 56· CH-1211 Geneve 20 · Switzerland Internet [email protected] X.400 C=ch; a=400net; p=iso; 0=isocs; S=central Printed in Switzerland license from IHS Not for Resale INTERNATIONAL STANDARD @ISO ISO 6250:1997(E) Petroleum products Determination of the water reaction of aviation fuels WARNING - The use of this International Standard may involve hazardous materials, operations and equipment. This International Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this International Standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1 Scope This International Standard specifies a method for the determination of the presence of water-miscible components inaviationfuels,andthe effect ofthese componentsonvolumechange,theconditionof thefuel-waterinterfaceand their tendency to form emulsions. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to registers of currently valid International Standards. Iso 3170:1988, Petroleum liquids —Manual sampling. ISO 3171:1988, Petroleum liquids -Automatic pipeline sampling ISO3696:1987,Waterforanalyticallaboratory useSpecification and test methods. 3 Principle A test portion of the fuel is shaken, using a standardized technique, at room temperature, in scrupulously clean gasoline, the appearance of the interface and the degree of separation of the two phases for all aviation fuels, are reportedasthewaterreactionofthefuel. 4 Reagents and materials For the analysis described in this International Standard, use only reagents of recognized analytical grade, and water complying with the requirements of Grade 3 of iSO 3696. CopyrightInternationalOrganizationforStandardization Not for Resale