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 Verre dans la constructionDétermination de la transmission lumineuse,delatransmissionsolairedirecte,delatransmission énergétique solaire totale, de la transmission de I'ultraviolet et des facteurs dérivés des vitrages Reference number ISO 9050:2003(E) ISO @ ISO 2003 by IHS under ed without license from IHS Not for Resale ISO 9050:2003(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 downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The IsO Central Secretariat 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 parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below ISO2003 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-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISo 2003 - All rights reserved py IHS unde edwithout license from IHS Not for Resale ISO 9050:2003(E) Contents Page Foreword .iv 1 Scope 2 Normative references 3 Determination of characteristic parameters... 3.1 3.2 Performance of optical measurements 3.3 Light transmittance...... 3.4 Light reflectance ... 3.5 Total solar energy transmittance (solar factor) . 3.6 UV-transmittance ... 14 3.7 CIE damage factor.. .14 3.8 Skin damage factor. 15 3.9 Colour rendering .... 15 4 Reference values 16 5 Test report. 16 Annex A (normative) Calculation procedures... 22 Bibliography 27 CopyrghtInternational Organizainfsandardizationrightsreserved ili Not for Resale ISO 9050:2003(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 non-governmental,inliaisonwithIsO,also take part in the work.Iso collaborates closely with the International Standards are drafted in accordance with the rules given in the ISO/lEc Directives, Part 2 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. rights. IsO shall not be held responsible for identifying any or all such patent rights. considerations Thissecondeditioncancelsandreplacesthefirstedition(lsO9050:1990),whichhasbeentechnicallyrevised ional Organizationfor Standardization @ISO2003-Allrightsreserved INTERNATIONAL STANDARD ISO 9050:2003(E) Glass in building Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors 1 Scope This International Standard specifies methods of determining light and energy transmittance of solar radiation for glazing in buildings. These characteristic data can serve as a basis for light, heating and ventilation This International Standard is applicable both to conventional glazing units and to absorbing or reflecting solar-control glazing, used as glazed apertures. The ap