ISO INTERNATIONAL STANDARD 18915 First edition 2000-12-15 Imaging materials Methods for the evaluation of the effectiveness of chemical conversion of silver images against oxidation Matériaux pour image - Méthodes d'évaluation de I'efficacite de la conversion chimique des images argentiques contre I'oxydation Reference number ISO 18915:2000(E) ISO @ ISO 2000 No r py IHS under lic ted without license from IHS Not for Resale ISO 18915:2000(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this area. Adobe is atrademarkof Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event @ISO2000 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing 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 copyright@iso.ch Web www.iso.ch Printed in Switzerland Iso2000-All rightsreserved py IHS unde edwithoutlicense from IHS Not for Resale ISO 18915:2000(E) Contents Page Foreword. Introduction 1 Scope 2 Normativereferences 3 Terms and definitions Dichromate bleach test .... 5 Hydrogen peroxide incubation test .. Annex A (informative) Numbering system for related International Standards. Annex B (informative) Variable in silver stabilizing treatments .. 10 Annex C (informative) Significance of the test methods... Annex D (normative) Correction of density values . 4 Bibliography..... Figure 1 Drawing of collar and baffles. Figure 2 Desiccator jar components.. 5 Figure 3 Assembled desiccator jar. ili d by IHS under lic se from IHS Not for Resa