ASTM_D_5383_-_02_2010.pdf

Designation:D538302(Reapproved 2010)Standard Practice forVisual Determination of the Lightfastness of Art Materials byArt Technologists1This standard is issued under the fixed designation D5383;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers a method for exposing specimensof colored art materials indoors to sunlight coming through aclosed window.Acard containing eight Blue Wool References2is exposed simultaneously.Blue Wool References23,6,and 7,are used as controls in determining when to remove testspecimens from exposure and rate them.Test specimens arerated by assigning each specimen the number of the Blue WoolReference that shows the same amount of color change.1.2 This practice may be used to indicate art materials thatwill change color within a few months or years in normalindoor exposure and those that will remain unchanged for aperiod of years.It is not rigorous enough to verify thatmaterials will remain unchanged for more than fifty years in ahome or office environment.A major consideration in devel-oping this method was to keep it simple and short enough to bepreformed without instrumentation in a comparatively shortlength of time.1.3 This practice shall only be used to evaluate the light-fastness of art materials not conforming to SpecificationsD4302,D5098 or D5067 and when it is not feasible to use TestMethods D4303.Practice D5398,which is a simpler method,may be used by artists to evaluate the lightfastness of their ownmaterials.1.4 This practice is not suitable for evaluating materialswith a high oil content such as artists oil,resin oil or alkydpaints.1.5 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:3D4302 Specification for Artists Oil,Resin-Oil,and AlkydPaintsD4303 Test Methods for Lightfastness of Colorants Used inArtists MaterialsD5067 Specification for Artists Watercolor PaintsD5098 Specification for Artists Acrylic Dispersion PaintsD5398 Practice for Visual Evaluation of the Lightfastness ofArt Materials by the UserE284 Terminology of Appearance2.2 Other Standards:ISO/R 105-B Textiles Tests for Colour Fastness Part B:Colour Fastness to Light and Weathering4British Standard 1006 Group B Methods for Colour Fastnessof Textiles and Leathers53.Terminology3.1 The definitions included in Terminology E284 are ap-plicable to this practice.3.2 Definitions of Terms Specific to This Standard:3.2.1 bloom,na cloudy coating,sometimes appearing oncolored pencil drawings due to migration of wax to the surface,that can be made transparent by gentle polishing.3.2.2 fugitive color,ncolorant that changes color in a fewdays or weeks,or that bleaches white in less than 18 months,when exposed behind glass to sunlight.3.2.3 glazing,nthe transparent glass or plastic sheetplaced in front of a picture when it is framed.1This practice is under the jurisdiction of ASTM Committee D01 on Paint andRelated Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.57 on Artist Paints and Related Materials.Current edition approved June 1,2010.Published July 2010.Originally approvedin 1993.Last previous edition approved in 2003 as D5383 02(2003).DOI:10.1520/D5383-02R10.2The Blue Wool Reference Card is available from Talas,Division TechnicalLibrary Service,213 W.35th St.New York,NY 10001-1992.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4International Organization for Standardization,ISO/R 105-B is available fromthe American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,NewYork,NY 10036,http:/www.ansi.org.5British Standard 1006 can be obtained from British Standards Institute(BSI),389 Chiswick High Rd.,London W4 4AL,U.K.,http:/www.bsi-.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2.4 Substrate,nthe white,pH neutral paper or board onwhich the art materials are applied.4.Summary of Practice4.1 This practice uses as controls three of the eight ISO BlueWool References developed for use with ISO/R 105-B andBritish Standard 1006 Group B.4.2 Specimens are made from the colored materials to betested and attached to a backing panel along with a cardcontaining the eight Blue Wool