FINAL INTERNATIONAL ISO/FDIS DRAFT STANDARD 5636-3 ISO/TC 6/SC 2 Paper and board Determination of Secretariat: SIS air permeance (medium range) - Voting begins on: 2013-07-29 Part 3: Voting terminates on: Bendtsen method 2013-09-29 Papier et carton - Détermination de la perméabilité a I'air (plage de valeurs moyennes) - Partie 3: Méthode Bendtsen RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWAREAND TO PROVIDESUPPORTING DOCUMENTATION INADDITION TOTHEIR EVALUATIONAS Reference number BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO- LOGICAL, COMMERCIAL AND USER PURPOSES, ISO/FDIS 5636-3:2013(E) DRAFT INTERNATIONAL STANDARDS MAY ON ISO OCCASION HAVE TO BE CONSIDERED IN THE DARDS TO WHICH REFERENCE MAY BE MADE IN Copyright International Organization for Standardization NS @IS02013 py IHS under vithout license from IHS Not for Resale IS0/FDIS 5636-3:2013(E) COPYRIGHTPROTECTEDDOCUMENT @IS02013 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 +4122 749 09 47 E-mail copyright@iso.org 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/FDIS 5636-3:2013(E) Contents Page Foreword .iv 1 Scope 1 2 Normative references ..1 3 Terms and definitions ..1 4 Principle .1 5 Apparatus. .2 6 Sampling. .3 7 Conditioning .3 8 Preparation of test pieces .3 9 Calibration .3 9.1 Variable-area flow-measuring device ..3 9.2 Electronic flow-measuring device .3 10 Procedure ..3 11 Calculation and expression of results .4 11.1 Calculationofairpermeance ..4 11.2 Reporting the results. .4 11.3 Standard deviation and coefficient of variation .4 12 Test report ..4 Annex A (normative) Calibration of capillary tubes and variable-area flowmeters .6 Annex B (normative) Care and maintenance of variable-area flowmeter-type Bendtsen testers...10 Annex C (informative) Precision .12 Bibliography .14 ii thout license from IHS Not for Resale