ISO INTERNATIONAL STANDARD 787-9 Second edition 2019-03 General methods of test for pigments and extenders - Part 9: Determination of pH value of an aqueous suspension Methodes générales d'essai des pigments et matieres de charge - Partie 9: Détermination du pH d'une suspension aqueuse Reference number ISO 787-9:2019(E) so @ IS0 2019 IS0 787-9:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO 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: +4122 749 0111 Fax: +41 22 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved IS0 787-9:2019(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references 3 Terms and definitions 4 Reagents 5 Apparatus. 6 Sampling. ..2 7 Procedure ..2 8 Expression of results .2 9 Test report. .2 @ IS0 2019 - All rights reserved ii