ISO INTERNATIONAL STANDARD 5667-1 Fourth edition 2023-03 Water quality - Sampling Part 1: Guidance on the design of sampling programmes and sampling techniques Qualite de I'eau - Echantillonnage - Partie 1: Recommandations relatives a la conception des programmes et des techniques d'échantillonnage Reference number ISO 5667-1:2023(E) ISO @IS02023 IS0 5667-1:2023(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 the internet or an intranet, withoutpriorwrittenpermission.Permission can be requested from eitherIso at the addressbelow or Iso's member body in the country of the requester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214Vernier,Geneva Phone: +41 22 749 01 11 Email: [email protected] Website: www.iso.org PublishedinSwitzerland i @ IS0 2023 - All rights reserved