ISO INTERNATIONAL STANDARD 975 Fifth edition 2021-12 Brown coals and lignites Determination of yield of benzene soluble extract Semi-automatic method Charbons bruns et lignites - Détermination du rendement en extrait de benzene soluble-Méthode semi-automatique Reference number IS0 975:2021(E) ISO @IS02021 IS0 975:2021(E) COPYRIGHT PROTECTED DOCUMENT @ IS02021 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, withoutpriorwrittenpermission.Permission can berequestedfrom eitherIso at theaddress below orIso'smemberbodyinthecountryoftherequester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2021 - All rights reserved