ASTM_E_2301_-_12.pdf

Designation:E230112Standard Test Method forDaytime Colorimetric Properties of FluorescentRetroreflective Sheeting and Marking Materials for HighVisibility Traffic Control and Personal Safety ApplicationsUsing 45:Normal Geometry1This standard is issued under the fixed designation E2301;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 test method describes the instrumental measure-ment of the colorimetric properties(CIE tristimulus values,luminancefactors,andchromaticitycoordinates)offluorescent-retroreflective sheeting and marking materialswhen illuminated by daylight.1.2 This test method is generally applicable to any sheetingor marking material having combined fluorescent and retrore-flective properties used for daytime high visibility trafficcontrol and personal safety applications.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 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:2D2244 Practice for Calculation of Color Tolerances andColor Differences from Instrumentally Measured ColorCoordinatesE179 Guide for Selection of Geometric Conditions forMeasurement of Reflection and Transmission Propertiesof MaterialsE284 Terminology of AppearanceE308 Practice for Computing the Colors of Objects by Usingthe CIE SystemE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE1164 Practice for Obtaining Spectrometric Data for Object-Color EvaluationE1767 Practice for Specifying the Geometries of Observa-tion and Measurement to Characterize the Appearance ofMaterialsE2152 Practice for Computing the Colors of FluorescentObjects from Bispectral Photometric DataE2153 Practice for Obtaining Bispectral Photometric Datafor Evaluation of Fluorescent Color2.2 CIE Document:CIE 15:2004 Colorimetry33.Terminology3.1 DefinitionsThe definitions contained in Guide E179,Terminology E284,and Practice E1164 are applicable to thistest method.4.Summary of Test Method4.1 This test method provides a procedure for measuring thecolorimetric properties of fluorescent-retroreflective sheetingand markings under simulated daylight illumination.Colori-metric properties are determined for CIE D65,which approxi-mates outdoor illumination at midday,and Daylight 15 000 K,which is an alternate D illuminant chosen to represent lowambient light/dawn/dusk daylight illumination conditions(seeCIE 15:2004).4.2 This test method requires the use of a calibrated bispec-trometer(two-monochromator spectrometer)with either 45:0or 0:45 geometry that can measure the specimens Donaldsonmatrix(see Practice E2153).1This test method is under the jurisdiction of ASTM Committee E12 on Colorand Appearance and is the direct responsibility of Subcommittee E12.05 onFluorescence.Current edition approved July 1,2012.Published September 2012.Originallyapproved in 2003.Last previous edition approved in 2003 as E2301 03 which waswithdrawn April 2012 and reinstated in July 2012.DOI:10.1520/E2301-12.2For 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.3Available from U.S.National Committee of the CIE(International Commissionon Illumination),C/o Thomas M.Lemons,TLA-Lighting Consultants,Inc.,7 PondSt.,Salem,MA 01970,http:/www.cie-usnc.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.3 This test method provides for calculation and reportingof separated fluorescence,reflectance and total tristimulusvalues(XYZ)and luminance factors(Y,%),and total chroma-ticity coordinates(x,y)from the Donaldson matrix for the CIE1931 Standard Colorimetric Observer.5.Significance and Use5.1 This test method provides procedures for obtainingtristimulus values,luminance factors and chromaticity coordi-nates of fluorescent-retroreflective materials by bispectral colo-rimetry using a 45:0 or 0:45 optical measuring system.5.2 The CIE 1931(2)standard observer is used to calculatethe colorimetric properties of fluorescent-retroreflective sheet-ing and markings used in daytime high visibility traffic controland personal safety applications because in practice thesematerials are primarily viewed from a distance where theysubtend less than 4 of the visual field.5.3 This test method is applicable to object-color specimensof any gloss le