ISO INTERNATIONAL STANDARD 473 Third edition 2019-03 Lithopone pigments General requirements and methods of testing Lithopone pour peintures - Exigences generales et méthodes d'essai Reference number IS0 473:2019(E) rso @IS02019 IS0 473:2019(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 i @ IS0 2019 - All rights reserved IS0 473:2019(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ...1 2 Normative references 3 Terms and definitions 4 Marking and labelling ..2 5 Required characteristics and their tolerances ..2 6 Sampling. ..3 7 Determination of barium sulfate and total zinc content .3 7.1 General .3 7.2 Method A 3 7.2.1 Principle .3 7.2.2 Reagents. .3 7.2.3 Apparatus. 5 7.2.4 Procedure. .5 7.2.5 Expression of results 5 7.3 Method B. .6 7.3.1 Principle .6 7.3.2 Reagents ..6 7.3.3 Apparatus. ..8 7.3.4 Procedure. .8 7.3.5 Expression of results ..8 Determination of zinc oxide content .8 8 8.1 Reagents. .8 8.2 Apparatus . .9 8.3 Procedure .9 8.4 Expression of results .9 9 Test report .10 Bibliography ..11 @ IS0 2019 - All rights reserved iii