ISO INTERNATIONAL STANDARD 1833-4 Third edition 2023-09 Textiles Quantitative chemical analysis - Part 4: Mixtures of certain protein fibres with certain other fibres (method using hypochlorite) Textiles - Analyse chimique quantitative - Partie 4: Mélanges de certaines fibres protéiniques avec certaines autres fibres (méthode a I'hypochlorite) Reference number ISO 1833-4:2023(E) ISO IS02023 IS0 1833-4:2023(E) COPYRIGHT PROTECTED DOCUMENT @IS02023 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, without prior written permission. Permission can be requested from either Iso at the address 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: +4122 749 0111 Email: [email protected] Website: www.iso.org Published in Switzerland ii @IS0 2023 - All rights reserved