ISO/TS TECHNICAL SPECIFICATION 22171 First edition 2023-12 Soil quality Determination of potential cation exchange capacity (CEC) and exchangeable cations buffered at pH 7, using a molar ammonium acetate solution Qualité du sol - Détermination de la capacité d'eéchange cationique (CEC) potentielle et de la teneur en cations échangeables, a I'aide d'une solution molaire d'acétate d'ammonium tamponnée a pH 7 Reference number IS0/TS 22171:2023(E) IS02023 IS0/TS 22171:2023(E) COPYRIGHT PROTECTED DOCUMENT @IS02023 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: +4122 749 0111 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2023 - All rights reserved