ISO INTERNATIONAL STANDARD 19399 Firstedition 2016-05-01 Paints and varnishes Wedge-cut method for determination of film thickness (scribe and drill method) Peintures et vernisDétermination de I'epaisseur par la méthode d'entaille en coin (Méthode de rayer et de forage) Reference number IS0 19399:2016(E) ISO International Organizafion for Standardization @ IS0 2016 ZHEJIANG INSTOFSTANDARDIZATION C15956617 ed without license from IHS IS0 19399:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS02016,PublishedinSwitzerland All rights reserved. Unless otherwise specified, 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 Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Intenationaibr Prganization for Standardization icensee-ZHEJIANG INST OF STANDARDIzAoISQs.6 -All rights reserved etworking permitted without license from IHS IS0 19399:2016(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references 3 Terms and definitions 4 Principle 5 Wedge-cut principle ..2 6 Apparatus .5 6.1 Method A .5 6.2 Method B ..7 6.3 Measuring microscope .8 7 Test specimens. .8 8 Procedure .8 8.1 Sample preparation .8 8.2 Number of determinations ..8 8.3 Method A (wedge-cut scribe) 8.4 Method B (wedge-cut bore) .9 9 Precision .9 10 Test report .9 Annex A (informative) Error sources and measuring problems .11 Annex B (informative) Evaluation with tilted specimen ..16 Annex C (informative) Evaluation with curved specimen ..21 Bibliography .27 iii ee=ZHEJIANG INSTOFSTANDARDIZATION C15956617 vided by IHS under lic ithout license from IHS