ISO INTERNATIONAL STANDARD 9050 Second edition 2003-08-15 Glass in building Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors Verredanslaconstruction-Determinationdelatransmission lumineuse,delatransmissionsolairedirecte,delatransmission énergetique solairetotale, dela transmissionde I'ultravioletetdes facteurs dérives des vitrages Reference number ISO 9050:2003(E) ISO @ISO 2003 Copyright Intemational Organization for Standardization vithout license from IHS Not for Resale ISO9050:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2003 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, ISO's member body in the country of the requester. ISO copyright office Case postale 56.CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ISo2003-Allrights reserved without license from IHS Not for Resale ISO9050:2003(E) Contents Page Foreword .iv 1 Scope 2 Normativereferences 3 Determination of characteristicparameters. 3.1 3.2 Performance ofoptical measurements. 3.3 Lighttransmittance....... 3.4 Light reflectance .. 3.5 Total solar energy transmittance (solar factor) 3.6 UV-transmittance ... 14 3.7 CIE damage factor... 3.8 Skindamagefactor. 15 3.9 Colourrendering... 15 4 Referencevalues 16 5 Test report. 16 Annex A (normative) Calculation procedures... 22 Bibliography 27 ili out license from IHS Not for Resale ISO9050:2003(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 9050 was prepared by Technical Committee ISO/TC 160, Glass in building, Subcommittee SC 2, Use considerations Thissecondeditioncancelsandreplacesthefirstedition(lisO9050:1990),whichhasbeentechnicallyrevised @ IsO 2003— All rights reserved onal Organization for Standardizatior Not for Resale INTERNATIONAL STANDARD ISO9050:2003(E) Glass in building Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors Scope 1 calculations of rooms and can permit comparison between different types of glazing. This International Standard is applicable both to conventional glazing units and to absorbing or reflecting are given. Furthermore, the general calculation procedures for units consistin