ISO INTERNATIONAL STANDARD 5636-5 Third edition 2013-11-01 Paper and board Determination of air permeance (medium range) - Part 5: Gurley method Papier et carton - Détermination de la perméabilité a I'air (plage de valeurs moyennes) - Partie 5: Méthode Gurley Reference number IS0 5636-5:2013(E) ISO @IS02013 mitted without license from IHS Not for Resale IS0 5636-5:2013(E) COPYRIGHT PROTECTED DOCUMENT @IS02013 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form 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 reproduction or networking permited without license from IHS Not for Resale IS0 5636-5:2013(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references ..1 3 Terms and definitions 4 Principle ..2 5 Apparatus and materials ..2 6 Sampling. 7 Conditioning ..4 8 Preparation of test pieces ..4 9 Calibration ..4 10 Procedure. .4 11 Calculation and expression of results .5 11.1 Calculation of air permeance... 11.2 Reporting the results .5 11.3 Standard deviation and coefficient of variation .5 12 Test report Annex A (normative) Volume check - Gurley apparatus Annex B (informative) Variations in apparatus ..9 Annex C (informative) Precision data ..10 Bibliography ..12 iii thout license from IHS Not for Resale