ISO INTERNATIONAL STANDARD 12743 Fourth edition 2021-05 Copper, lead, zinc and nickel concentrates Sampling procedures for determination of metal and moisture content Concentrés de cuivre, de plomb, de zinc et de nickel Procédures d'echantillonnage pour la deétermination de la teneur en metal et de I'humidite Reference number IS012743:2021(E) ISO ISO2021 IS0 12743:2021(E) COPYRIGHTPROTECTEDDOCUMENT @IS02021 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 below or Iso's member body in the country of the requester. IsO copyrightoffice 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 2021 - All rights reserved