ISO INTERNATIONAL STANDARD 23655-1 Firstedition 2022-09 Water quality Nickel-59 and nickel-63 - Part 1: Test method using liquid scintillation counting Qualité de I'eau - Nickel 59 et Nickel 63 - Partie 1: Methode d'essai par comptage des scintillations en milieu liquide Reference number IS0 23655-1:2022(E) ISO @IS02022 IS0 23655-1:2022(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 any form or by any means, electronic or mechanical, including photocopying, or posting on 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 ii @ IS0 2022 - All rights reserved