ISO INTERNATIONAL STANDARD 7404-3 Third edition 2009-10-01 Methods for the petrographic analysis of coals - Part 3: Method of determining maceral group composition Methodes d'analyse pétrographique des charbons- Partie 3: Determination de la composition en groupes de maceraux Reference number ISO 7404-3:2009(E) @ ISO 2009 THS unde ISO 7404-3:2009(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 accepts no liability in this area. Adobe is a trademark of Adobe Systems 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 that a problem relating to it is found, please inform the Central Secretariat at the address given below COPYRIGHT PROTECTED DOCUMENT ISO2009 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. + 4122 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2009 - All rights reserved pyIHS unde 930975001,User=bao,zhou ISO 7404-3:2009(E) Contents Page Foreword Introduction 1 Scope 2 Normative references 3 Terms and definitions 4 5 Reagents and materials .. 6 Apparatus.... 7 Preparation of coal sample .. 8 Procedure.... 9 Expression of results 10 Precision 11 Test report. Annex A (informative) Sub-division of maceral groups. .6 Bibliography. Copyright Internatinal ori/St2gQ&araiallb rights reserved ili iodies