ISO INTERNATIONAL STANDARD 1833-18 Third edition 2020-10 Textiles Quantitative chemical analysis - Part 18: Mixtures of silk with wool or other animal hair (method using sulfuric acid) Textiles Analyse chimique quantitative - Partie 18: Melanges de soie avec de la laine ou d'autres poils animaux (méthode a I'acide sulfurique) Reference number ISO 1833-18:2020(E) OS1 @ IS0 2020 IS0 1833-18:2020(E) COPYRIGHTPROTECTEDDOCUMENT @IS02020 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: +41 22 749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2020 - All rights reserved