ISO INTERNATIONAL STANDARD 1431-3 Second edition 2017-06 Rubber, vulcanized or thermoplastic Resistance to ozone cracking Part 3: Reference and alternative methods for determining the ozone concentration in laboratory test chambers Caoutchouc vulcanisé ou thermoplastique - Reésistance au craquelage par I'ozone - Partie 3: Methode de réference et autres méthodes pour la détermination de la concentration d'ozone dans les enceintes d'essai de laboratoire Reference number ISO 1431-3:2017(E) [so International Organization for Standardization @ IS0 2017 HEJIANG INST OF STANDARDIZATION C15956617 I without license from IHS IS0 1431-3:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland 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 copyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org icensee-ZHEJIANG INSTOF STANDARDIZAoISQ07 -All rights reserved Iby IHS unde Not for Resale, 2017/9/11 05:21:55 etworking permitted without license from IHS IS0 1431-3:2017(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Principle ..2 5 Apparatus. ..2 6 Calibration ..2 7 Procedure. ..2 8 Expression of results ..2 9 Test report ..3 Annex A (informative) Effect of ambient atmospheric pressure on ozone cracking of rubber ..4 Annex B (normative) Alternative instrumental methods .5 Annex C (normative) Wet-chemical methods .9 Bibliography .22 iii ee=ZHEJIANG INST OF STANDARDIZATION C15956617 vithout license from IHS