Designation:E2630−08(Reapproved2013)StandardTestMethodforLuminanceRatioofaFluorescentSpecimenusingaNarrowBandSource1ThisstandardisissuedunderthefixeddesignationE2630;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheinstrumentalmeasurementoftheluminanceratioofafluorescentcoatingorsheetsamplewhenilluminatedbyanarrowbandsource.1.2Thistestmethodisgenerallyapplicabletoanycoatingorsheetingmaterialhavingcombinedfluorescentandreflectiveproperties,wherethefluorescenceisactivatedby405nmlight.1.3ThistestmethodisintendedasacompaniontoSpeci-ficationE2501tosupportthedevelopmentandspecificationofindustrialcoatingsthatareusedinasystemfordetectionofcoatingdefectswheninspectedwiththeSpecificationE2501lightsource.Thistestmethodestablishesaquantitativemea-sureoftheopticalpropertyofacoatingthatcorrelatestoitsabilitytoenhancedefectcontrastunderthespecifiedinspectionlightsource.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D2805TestMethodforHidingPowerofPaintsbyReflec-tometryD4356PracticeforEstablishingConsistentTestMethodTolerances(Withdrawn2007)3D5162PracticeforDiscontinuity(Holiday)TestingofNon-conductiveProtectiveCoatingonMetallicSubstratesE179GuideforSelectionofGeometricConditionsforMeasurementofReflectionandTransmissionPropertiesofMaterialsE284TerminologyofAppearanceE1164PracticeforObtainingSpectrometricDataforObject-ColorEvaluationE1488GuideforStatisticalProcedurestoUseinDevelopingandApplyingTestMethodsE2501S...
