BS ISO 3771:2011 BS 2000-276:2011 BSl Standards Publication Petroleum products - Determination of base number Perchloric acid potentiometric titration method bsi. ..making excellence a habit. BS ISO 3771:2011 BRITISH STANDARD National foreword This British Standard is the UK implementation of IS0 3771:2011.It 1/2015, (e) The British supersedes BS 2000-276:1995 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PTI/13, Petroleum Testing and Terminology. A list of organizations represented on this committee can be obtained on request to its secretary. Energy Institute, under the brand of IP, publishes and sells all Parts of BS 2000, and all BS EN petroleum test methods that would be Part of Bs 2000, both in its annual publication"Standard methods for analysis and testing of petroleum and related products and British Standard 2000 Parts" and individually. Further information is available from: Energy Institute, 61 New Cavendish Street, London W1G 7AR.Tel:02074677100.Fax:02072551472. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @ BSI 2011 ISBN 978 0580 622793 ICS 75.080 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the StandardsPolicyandStrategyCommittee on30September2011. Amendments issued since publication Date Textaffected 101 BS ISO 3771:2011 INTERNATIONAL ISO 3771 STANDARD Third edition 2011-09-15 Petroleum products Determination of base number Perchloric acid potentiometric titration method Produits petroliers- Determination de I'indicedebase-Methodepar titrage potentiometrique a Iacide perchlorique Reference number ISO 3771:2011(E) ISO @ISO 2011 BS ISO 3771:2011 ISO 3771:2011(E) LL (0) COPYRIGHTPROTECTEDDOCUMENT ISO 2011 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-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland i= @ ISO 2011-All rights reserved BS ISO 3771:2011 ISO3771:2011(E) Foreword IsO (the International Organization for Standardization)is a worldwide federation of national standards bodies technical committees. Each memberbody interested in a subject forwhich a technical committee has been Electrotechnical Commission (IEC) onall matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards. 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. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. This third edition cancels and replaces the second edition (IsO 3771:1994), which has been technically revised. @ ISO 2011 -All rights reserved ili BS ISO 3771:2011 BS ISO 3771:2011 INTERNATIONALSTANDARD ISO 3771:2011(E) PetroleumproductsDeterminationofbasenumber Perchloric acidpotentiometrictitrationmethod WARNING The use of this International Standard may involve hazardous materials, operations and equipment.ThisInternationalStandarddoes notpurporttoaddressallofthe safetyproblems associated withitsuse.ItistheresponsibilityoftheuserofthisInternationalStandardtoestablishappropriate safety and healthpractices and determine the app