ISO INTERNATIONAL STANDARD 18924 Secondedition 2013-02-01 Imaging materials Test method for Arrhenius-type predictions Matériaux d'image - Methode d'essai pour les predictions de type Arrhenius Reference number IS0 18924:2013(E) LSO IS02013 IHS under itted without license from IHS Not for Resale IS0 18924:2013(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 copyright@iso.org Web www.iso.org Published in Switzerland @ IS0 2013 - All rights reserved No reproductic networking permited without license from IHS Not for Resale IS0 18924:2013(E) Contents Page Foreword ..iv 1 Scope 2 Terms and definitions .1 3 Background and theory.. ..2 3.1 Background .2 3.2 Theory .3 3.3 Effects of relative humidity .3 4 Experimental procedures .4 4.1 Outline of Arrhenius test. .4 4.2 Requirements for a meaningful Arrhenius test 4 4.3 Sealed-bag versus free-hanging testing ..4 4.4 Effect of heating on sealed bags containing photographic film or paper .5 4.5 Determination of test increments .5 5 Calculations. .5 6 Test report. Annex A (informative) Advantages and disadvantages of sealed-bag and free- hanging incubations .8 Annex B (informative) Limitations of the Arrhenius method .9 Annex C (informative) Examples of Arrhenius relationships .11 Bibliography .13 iii d by IHS under se with ISt thout license from IHS Not for Resale