ISO INTERNATIONAL STANDARD 4892-2 Third edition 2013-03-01 Plastics Methods of exposure to laboratory light sources - Part 2: Xenon-arc lamps Plastiques - Methodes d'exposition a des sources lumineuses de laboratoire- Partie 2: Lampes a arc au xénon Reference number IS0 4892-2:2013(E) ISO @ IS0 2013 IS0 4892-2:2013(E) COPYRIGHT PROTECTEDDOCUMENT @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 ii @ IS0 2013 - All rights reserved IS0 4892-2:2013(E) Contents Page Foreword .iv 1 Scope .1 2 Normative references .1 3 Principle .1 4 Apparatus. .2 4.1 Laboratory light source 2 4.2 Test chamber 4 4.3 Radiometer .5 4.4 Black-standard/black-panel thermometer 5 4.5 Wetting and humidity-control equipment 5 4.6 Specimen holders 5 4.7 Apparatus to assess changes in properties .6 5 Test specimens. 6 6 Exposure conditions .6 6.1 Radiation. .6 6.2 Temperature .6 6.3 Relative humidity of chamber air .7 6.4 Spraycycle 7 6.5 Cycles with dark periods .8 6.6 Sets of exposure conditions .8 7 Procedure .9 7.1 General .9 7.2 Mounting the test specimens .9 7.3 Exposure. 9 7.4 Measurement of radiant exposure 9 7.5 Determination of changes in properties after exposure 9 8 Exposure report .9 Annex A (informative) Filtered xenon-arc radiation - Relative spectral irradiance .10 Annex B (normative) Additional exposure cycles .11 Bibliography 13 @ IS0 2013 - All rights reserved ii