ISO INTERNATIONAL STANDARD 18907 Secondedition 2013-02-01 Imaging materials Photographic films and papers Wedge test for brittleness Matériaux pour I'image -Films et papiers photographiques - Détermination de la méthode dite <<du coin>> Reference number IS0 18907:2013(E) LSO @IS02013 HS under Noreproo ted without license from IHS Not for Resale IS0 18907:2013(E) COPYRIGHTPROTECTEDDOCUMENT ISO2013 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 Case postale 56:CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ IS0 2013 - All rights reserved No reproductic networking permited without license from IHS Not for Resale IS0 18907:2013(E) Contents Page Foreword ..iv Introduction. 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Principle ..1 5 Apparatus. 5.1 Wedge tester for brittleness 1 5.2 Test chamber ..2 6 Sampling 2 6.1 Preparation of specimens .2 6.2 Selection of specimens ..2 6.3 Size of specimens. .2 7 Conditioning and test conditions ..4 7.1 Conditioning of specimens. 7.2 Test conditions. ..5 8 Procedure. ..5 9 Test report. .6 9.1 Test data. ..6 9.2 Significance .6 Bibliography .7 iii ded by IHS under license with ISC ed without license from IHS Not for Resale