ISO INTERNATIONAL STANDARD 1833-6 Second edition 2018-10 Textiles Quantitative chemical analysis - Part 6: Mixtures of viscose, certain types of cupro, modal or lyocell with certain other fibres (method using formic acid and zinc chloride) Textiles-Analyse chimiquequantitative Partie6:Melangesdeviscose, certains types de cupro,modal ou lyocell avec certaines autres fibres (methode a I'acideformique et au chlorure de zinc) Reference number ISO 1833-6:2018(E) ISO @ IS0 2018 IS01833-6:2018(E) COPYRIGHTPROTECTEDDOCUMENT IS02018 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 below or Iso's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+4122749 0111 Fax: +41 22 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2018 - All rights reserved IS01833-6:2018(E) Contents Page Foreword ..iv 1 Scope ..1 2 Normativereferences 3 Termsand definitions 4 Principle 5 Reagents. 6 Apparatus ..2 ..2 7 Testprocedure 8 Calculation and expression ofresults .3 9 Precision .3 @ IS0 2018 -All rights reserved ili