ISO INTERNATIONAL STANDARD 4589-1 Second edition 2017-04 Plastics Determination of burning behaviour by oxygen index - Part 1: General requirements Plastiques - Détermination du comportement au feu au moyen de I'indice d'oxygene - Partie 1: Exigences générales Reference number IS0 4589-1:2017(E) ISO @ ISO 2017 IS0 4589-1:2017(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 or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior writtenpermission.PermissioncanberequestedfromeitherIso attheaddressbeloworIso'smemberbodyinthecountryof the requester ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel.+41227490111 Fax +41 22 749 09 47 [email protected] www.iso.org ii @ IS0 2017 - All rights reserved IS0 4589-1:2017(E) Contents Page Foreword. iv Introduction 1 Scope 2 Normative references.. 3 Terms and definitions... 4 Principles of the test... 5 Applicability of the test .. 6 Specimen preparation 7 Apparatus. 7.1 General. 7.2 Measuring device... 7.3 Column design. 7.4 Sample holder. 8 Operating conditions 8.1 Calibration. 8.2 Flame application time 8.3 Gasflow 8.4 Elevated-temperature routine 8.5 Pass/fail criteria .. 9 Conclusions Bibliography @ IS0 2017 - All rights reserved ii