Designation:D2392−15(Reapproved2021)StandardTestMethodforColorofDyedAviationGasolines1ThisstandardisissuedunderthefixeddesignationD2392;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationoftheaccept-abilityofcolorofdyedaviationgasolines.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Forspecificwarningstatements,seeAnnexA1.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.SummaryofTestMethod2.1Thehueandcolorintensityofasampleofthegasolinetobetestedarecomparedwiththoseofglasspermanent-colorstandards.3.SignificanceandUse3.1Aviationgasolinesaredyeddifferentcolorsforeasyidentificationofgrade,thusminimizingpossibilitiesforfuelingaircraftwithfuelofthewronggrade.4.Apparatus4.1ColorComparator,split-field,forviewingsimultane-ously(bytransmittedlight)thesampletobetestedandthecombinationofthereferenceliquidandtheglasspermanent-colorstandard.4.2FluidTubes,ofglass,200mmviewingdepth,withafused-onplanebottomplate.4.3Plungers,FluidType,ofpolishedopticalglass.4.4AviationGasolineColorStandards,2permanent-colorglassdisks.5.Material5.1Thereferenceliquidcanbeeitherdistilledwaterorasampleofthegasolinetobetestedbeforetheadditio...
