Opacity of glass

This data sheet aims to:

• Provide basic knowledge about opacity and transmittance;
• Specify the important points for transmittance measurement;
• Propose a reference method for the measurement of the transmittance of glass packaging, including in relation with cullet treatment (for possible comparison with a reference value for recyclability).

This document is an adaptation of the Cetie DT30.00 - COLOUR MEASUREMENT OF GLASS PACKAGING to the specific case of opacity of glass. More detailed information is available in the standards on colorimetry.

AMCOR FLEXIBLES CAPSULES (SAINT-SEURIN), ANFEVI (Asociacion Nacional de Fabricantes de Envases de Vidrio), ANHEUSER-BUSCH INBEV (AB INBEV) / GPDIL , ARC FRANCE, ARDAGH GLASS PACKAGING S.A PROPERTY LIMITED, ARDAGH GROUP NETHERLAND B.V. (DONGEN), AVERY DENNISON (FRANCE), AVERY DENNISON HEADQUARTERS, BACARDI MARTINI FRANCE (SAINT OUEN), BERLIN PACKAGING FRANCE, BERLIN PACKAGING ITALY S.P.A., BERLIN PACKAGING LLC (CHICAGO), BERLIN PACKAGING NETHERLANDS B.V., BORMIOLI LUIGI S.p.A., BRASSERIES KRONENBOURG SAS, BRITISH GLASS (British Glass Manufacturers Federation), BUNDESVERBAND GLASINDUSTRIE E.V. (Federal Association of the German Glass Industry), CHANEL PARFUMS BEAUTÉ, CITEO, COCA-COLA EUROPE OU, COCA-COLA SERVICES FRANCE S.A., COCA-COLA SERVICES S.A/N.V. (BELGIUM), CONCHA Y TORO (CHILI), COSTER GROUP (SPAIN), COTY FRANCE S.A. (PARIS), CSVMF (Chambre Syndicale des Verreries Mécaniques), DAVID ROSE PACKAGING SOLUTIONS, DAVID SYRETT PACKAGING CONSULTANCY Ltd, DAVIDE CAMPARI-MILANO S.P.A , E. REMY MARTIN & Co. (COGNAC), EPG Service GmbH, ESTEE LAUDER (US MELVILLE), ESTEE LAUDER COMPANIES (US NY), ESTÉE LAUDER COMPANIES AG (WOLLERAU), EU Domestic Glass, FÉDÉRATION DU CRISTAL ET DU VERRE, FERVER (European Federation of Glass Recyclers), FEVE (Federation of European manufacturers of glass containers), FINAT, GENOSSENSCHAFT DEUTSCHER BRUNNEN EG, GERRESHEIMER ESSEN GmbH , GERRESHEIMER MOMIGNIES S.A., GUALA CLOSURES S.P.A., GULF GLASS MANUFACTURING COMPANY (GGMC), HEINEKEN GLOBAL SUPPLY CHAIN (NETHERLANDS), HEINZ GLAS GmbH & Co. KG aA GERMANY (KLEINTETTAU), HENNESSY, HERMA GmbH, HEUFT FRANCE, HEUFT SYSTEMTECHNIK GmbH, KEMP Holger (Head Of Product Management & Sales Strategy), HEUFT USA, KRONES AG, L'ORÉAL AULNAY SOUS BOIS, LUMSON S.p.a., MAISON DES VINS ET SPIRITUEUX, MARPOSS S.p.a., MARTELL ET CO (ROUILLAC), MCC PREMIUM LABEL SOLUTIONS (SPAIN), MOET & CHANDON, NESTLÉ PRODUCT TECHNOLOGY (CENTRE ORBE), O-I FRANCE S.A.S (VILLEURBANNE), O-I UK (ALLOA), O-I UK (HARLOW), O-I US (PERRYSBURG), PARFUMS CHRISTIAN DIOR , PELLICONI & C. SPA, PERNOD RICARD FRANCE, PERNOD-RICARD S.A. (PARIS 4), POCHET DU COURVAL, QUANTIS, RAMONDIN CAPSULAS, SAVERGLASS (FRANCE), SHISEIDO INTERNATIONAL FRANCE, SIBELCO FRANCE, SPA MONOPOLE S.A., STAZIONE SPERIMENTALE DEL VETRO, STOELZLE MASNIERES PARFUMERIE S.A.S. (MASNIERES), STOELZLE-OBERGLAS GmbH (KOEAFLACH), SUNTORY BEVERAGE & FOOD EUROPE, SUNTORY BEVERAGE & FOOD EUROPE (BELGIUM, RIXENART), SUNTORY BEVERAGES & FOOD EUROPE (FRANCE - AIX EN PROVENCE), TIAMA, TREFFPACK – C.E. GÄTCKE'S GLAS GESELLSCHAFT GmbH, UPM RAFLATAC OY (SPAIN), UPM RAFLATAC OY (TAMPERE), VERALLIA FRANCE , VERALLIA GERMANY, VERBAND METALL VERPACKUNGEN E.V. , VERESCENCE FRANCE (MERS LES BAINS), VETROPACK STRADA , VIDRALA S.A, VINOLOK A.S., WILLIAM GRANT AND SON'S DISTILLERS LIMITED, ZIGNAGO VETRO BROSSE , ZIGNAGO VETRO S.P.A.