Designation:D5150−92(Reapproved2013)StandardTestMethodforHidingPowerofArchitecturalPaintsAppliedbyRoller1ThisstandardisissuedunderthefixeddesignationD5150;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodmeasurestheabilityofapainttohideorobscureasurfacetowhichithasbeenappliedbyapracticalapplicationprocedure.Thistestmethodcoverstheuseofapaintroller,buttheconceptisexpectedtoworkequallywellwhentheapplicationtoolisapaintbrushorpaintpad.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D16TerminologyforPaint,RelatedCoatings,Materials,andApplicationsD1475TestMethodForDensityofLiquidCoatings,Inks,andRelatedProductsD2244PracticeforCalculationofColorTolerancesandColorDifferencesfromInstrumentallyMeasuredColorCoordinatesD3924SpecificationforEnvironmentforConditioningandTestingPaint,Varnish,Lacquer,andRelatedMaterialsD3925PracticeforSamplingLiquidPaintsandRelatedPigmentedCoatingsE1347TestMethodforColorandColor-DifferenceMea-surementbyTristimulusColorimetry3.Terminology3.1Definitions:3.1.1hidingpower,n—theabilityofapaintorpaintmaterialasusedtohideorobscureasurfacetowhichithasbeenuniformlyapplied(seeTerminologyD16).4.SummaryofTestMethod4.1Thetestpaintisappliedwitharollerataspecifiedspreadingrateontoatestchartconsistingofaseriesoflighttodarkgreystripes.Afterdrying,asecondcoatisappliedinthesamemanneroverhalfofthechart.Afterthesecondcoathasdr...
