ISO/TS TECHNICAL SPECIFICATION 23973 First edition 2020-08 Liquid chromatography at critical conditions (LCCC) 一 Chemical heterogeneity of polyethylene oxides Chromatographie liquide aux conditions critiques Hétérogéneite chimique des oxydes de polyethylene Reference number IS0/TS 23973:2020(E) ISO IS02020 IS0/TS23973:2020(E) COPYRIGHT PROTECTED DOCUMENT @ 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 0111 Email: copyright@iso.org Website: www.iso.org Published in Switzerland i @ IS0 2020 - All rights reserved