ASTM_D_5398_-_97_2010.pdf

Designation:D539897(Reapproved 2010)Standard Practice forVisual Evaluation of the Lightfastness of Art Materials bythe User1This standard is issued under the fixed designation D5398;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.Any color change is compared to fading in aBlue Wool Reference2and exposed simultaneously.1.2 This practice shall only be used by individuals to selectmaterials with satisfactory lightfastness for their own use or toidentify materials that require special protection from light.When test information is to be communicated to others,TestMethods D4303 or Practice D5383 must be used.1.3 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 beperformed without instrumentation in a comparatively shortlength of time.1.4 This practice is not suitable for evaluating the lightfast-ness of materials with a high oil content such as artists oil,resin-oil or alkyd paints.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:3D4303 Test Methods for Lightfastness of Colorants Used inArtists MaterialsD5383 Practice for Visual Determination of the Lightfast-ness of Art Materials by Art TechnologistsE284 Terminology of Appearance2.2 Other Standards:ISO/R 105-B Textiles Tests for Colour Fastness Part B:Colour Fastness to Light and Weathering4British Standards Institute(BSI)1006 Group B Methods forColour Fastness of 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.3.2.4 substrate,nthe white,pH neutral paper or board onwhich the art materials are applied.4.Summary of Practice4.1 This practice employs as a control Blue Wool Reference3 from the series of eight Blue Wool References of knownlightfastness that were developed for use with ISO/R 105-B4and BSI 1006 Group B.51This 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 D5398 97(2003).DOI:10.1520/D5398-97R10.2ISO Blue Wool Reference 3 is available from the Society of Dyers andColourists,P.O.Box 244,Grattan Road,Radford,West Yorkshire,BD12 JB,England,or as the third band from the top of the Textile Fading Card from Talas,Division of Technical Library Service,Inc.,213 West 35th St.,New York,NY10001-1996.3For 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.4ISO/R 105-B is available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.5British Standard 1006 Group B is available 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 4.2 Specimens are made of the colored materials to be testedand placed on a backing board along with Blue Wool Refer-ence#3 or a Blue Wool Reference Card containing all eightBlue Wool References.4.3 One half of each colored specimen and one half of theBlue Wool References are covered,shielding that half of thespecimens and references from