ISO INTERNATIONAL STANDARD 9370 Third edition 2017-04 Plastics Instrumental determination of radiant exposure in weathering tests General guidance and basic test method Plastiques-Determinationaumoyend'instrumentsdeI'exposition énergetique lors d'essais d'exposition aux intempéries-Lignes directrices generales et méthode d'essai fondamentale Referencenumber IS09370:2017(E) iso Intemational Organization for Standardization @IS02017 ted without license from IHS IS0 9370:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS02017,Published inSwitzerland 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. IsOcopyrightoffice Ch.de Blandonnet 8.CP 401 CH-1214 Vernier, Geneva, Switzerland Tel.+4122 749 0111 Fax +4122749 0947 copyright@iso.org www.iso.org Licensee-ZHEJIANG INST.OF STANDARDIZoISQ0a7 -All rights reserved No reproduction or networking permited without license from IHS Not for Resale, 2017/8/21 02:19:29 IS0 9370:2017(E) Contents Page Foreword ..iv Introduction. .. 1 Scope. 2 Normative references 3 Terms and definitions ..2 4 Significance and use ..6 4.1 General considerations .6 4.2 Natural weathering Fixed-angleorequatorial-mountexposure 4.3 Accelerated natural weathering Solar-concentrating exposures using Fresnel- reflecting concentrators .7 4.4 Artificial accelerated weathering and artificial accelerated irradiation 7 5 Apparatus. ..8 5.1 General .8 5.2 Non-selectiveradiometers (seeTable1) .10 5.3 Selective (UV)radiometers (seeTable2) .10 5.4 Recorders and data loggers. .11 6 Calibration .11 6.1 General .11 6.2 Reference and field radiometers .12 6.3 Selectivereferenceradiometers .12 6.4 Selectivefield radiometers .13 6.5 Other requirements. ..13 7 Procedure .13 7.1 Natural weathering- Fixed-angleorequatorial-mountexposure .13 7.2 Accelerated natural weathering Solar concentrating exposures using Fresnel reflecting concentrators ..14 7.3 Artificial accelerated weathering or artificial accelerated irradiation ..14 8 Exposurereport ..14 Annex A (informative) Comparison of typical wide-band UV radiometers ..16 AnnexB (informative)Spectralmismatchofselectivefilterradiometers .17 Bibliography ..20 iii e=ZHEJIANG INSTOFSTANDARDIZATION C15956617 lout license from IHS