International ISO Standard IS08959 First edition Traditional Chinese medicine - 2024-08 Eucommia ulmoides stem bark Médecine traditionnelle chinoise Ecorce d'Eucommia ulmoides Reference number ISO 8959:2024(en) @ISO2024 IS0 8959:2024(en) COPYRIGHT PROTECTED DOCUMENT IS02024 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 memberbody inthe country ofthe requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+41227490111 Email: [email protected] Website: www.iso.org Published in Switzerland @ IS0 2024 - All rights reserved ii IS0 8959:2024(en) Contents Page Foreword .iv Introduction .V 1 1 Scope 2 Normative references .1 3 Terms and definitions. .1 4 .2 Descriptions .2 5 Requirements. .2 5.1 General characteristics 3 5.2 Macroscopic characteristics 5.3 Microscopic characteristics .3 5.3.1 Transverse section. .3 .3 5.3.2 Powder 5.4 Moisture 4 5.5 Total ash .4 5.6 Acid-insoluble ash .4 5.7 Thin-layer chromatogram .5 5.8 Ethanol-soluble extractives 5 5.9 Content of marker compound(s) .5 5.10 .5 Heavy metals. 5.11 Pesticideresidues 5 5.12 Sulfur dioxide residues Sampling. .5 6 Test methods .5 7 7.1 Macroscopic identification. .5 7.2 .5 Determinationofmoisture 7.3 Determination oftotalash 5 7.4 Determination of acid-insoluble ash .5 7.5 Thin-layer chromatographic identification .5 7.6 Determination of ethanol-soluble extractives .6 7.7 Determination of marker compound(s) 6 6 7.8 Determination of heavy metals .6 7.9 Determination of pesticide residues 7.10 Sulfur dioxide residues. ..6 8 Test report. .6 9 Packaging, storage and transportation .6 .6 10 Marking and labelling Annex A (informative) Thin-layer chromatographic (TLC) identification ..8 Annex B (informative) Determination of marker compound(s) by HPLC-UV .10 Annex C (informative) National and regional requirements for Eucommia ulmoides stem bark. .14 Bibliography .16 @ IS0 2024 - All rights reserved iii