ISO INTERNATIONAL STANDARD 23668 First edition 2022-11 Ships and marine technology - Marine environment protection - Continuous on-board pH monitoring method Navires et technologie maritime Protection de I'environnement marin - Méthode de surveillance continue du pH a bord Reference number ISO 23668:2022(E) rso @ ISO 2022 IS0 23668:2022(E) COPYRIGHT PROTECTED DOCUMENT @ IS0 2022 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 i @ IS0 2022 - All rights reserved