International ISO Standard IS08959 First edition Traditional Chinese medicine - 2024-08 Eucommia ulmoides stem bark Médecinetraditionnelle chinoiseEcorced'Eucommia ulmoides Reference number IS8959:2024(en) @ISO 2024 IS0 8959:2024(en) COPYRIGHTPROTECTEDDOCUMENT @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 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 @IS0 2024- All rights reserved ii IS08959:2024(en) Contents Page Foreword .iv Introduction ..V .1 1 Scope 2 Normativereferences .1 3 Terms and definitions .1 4 Descriptions. .2 .2 5 Requirements. 5.1 General characteristics ..2 5.2 Macroscopiccharacteristics 3 5.3 Microscopic characteristics ..3 5.3.1 Transverse section. .3 5.3.2 Powder .3 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 ofmarker compound(s) 5 .5 5.10 Heavy metals. 5.11 Pesticideresidues 5 5.12 Sulfur dioxide residues. .5 Sampling. 6 .5 7 Test methods .5 7.1 Macroscopicidentification. .5 7.2 .5 Determinationofmoisture 7.3 Determination oftotalash 5 7.4 Determination of acid-insoluble ash .5 7.5 Thin-layerchromatographicidentification .5 7.6 Determinationofethanol-solubleextractives .6 7.7 Determination of marker compound(s) 6 7.8 Determinationofheavymetals .6 7.9 Determination of pesticide residues .6 7.10 Sulfur dioxide residues. .6 8 Test report. .6 9 Packaging, storage and transportation .6 10 Marking and labelling .6 AnnexA(informative)Thin-layerchromatographic (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