ISO INTERNATIONAL STANDARD 12830 Second edition 2019-07 Paper, board, pulps and cellulose nanomaterials Determination of acid-soluble magnesium, calcium, manganese, iron, copper, sodium and potassium Papiers, cartons, pates et nanomatériaux a base de cellulose. Détermination de la teneur en magnésium, calcium, manganese, fer, cuivre, sodium et potassium soluble dans I'acide Reference number IS012830:2019(E) @ IS0 2019 IS0 12830:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2019 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: +41 22 749 01 11 Fax: +41 22 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved