Designation:D1455−17StandardTestMethodfor60°SpecularGlossofEmulsionFloorPolish1ThisstandardisissuedunderthefixeddesignationD1455;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofthe60°specularglossoffilmsofemulsionfloorpolishafterapplica-tiontoasubstrate.NOTE1—Specularglossisoneofseveralrelatedappearanceattributesthatproducethesensationofglossiness.Forthisreason,specularglossmeasurementsmaynotalwayscorrelatewellwithvisualrankingsofglossiness.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.3Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D523TestMethodforSpecularGlossD1436TestMethodsforApplicationofEmulsionFloorPolishestoSubstratesforTestingPurposes3.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1speculargloss—theratioofreflectedtoincidentlight,times1000,forspecifiedaperturesofilluminationandrecep-tionwhentheaxisofreceptioncoincideswiththemirrorimageoftheaxisofillumination.4.SignificanceandUse4.1Thistestmethodmaybeusedtoevaluatethedifferenceinglossofdriedfilmsofemulsionfloorpolisheswhenthelightreflectedata60°angleismeasured.Extremelyhigh-orlow-glosspolishesmaynotbedifferentiatedata60°angle.A20°anglemeasuredinaccordancewithTestMethodD523maygivebetterdefinitionofgloss.5.Apparatus5.1Glossmeter—Theinstrumentandthereferencestan-dardssha...
