ISO INTERNATIONAL STANDARD 19609-4 First edition 2022-12 Traditional Chinese medicine Quality and safety of raw materials and finished products made with raw materials - Part 4: Testing for preservatives and unwanted compounds Medecinetraditionnelle chinoiseQualitéet sécurité des matieres premieres et des produits finis fabriqués a partir de matieres premieres- Partie4:Essais des conservateursetcomposés indésirables Reference number IS0 19609-4:2022(E) ISO @IS02022 IS0 19609-4:2022(E) COPYRIGHTPROTECTEDDOCUMENT @IS02022 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 anyform or byanymeans, 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-1214Vernier,Geneva Phone:+41227490111 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @IS02022-All rights reserved