Designation:D8148−22StandardTestMethodforSpectroscopicDeterminationofHazeinFuels1ThisstandardisissuedunderthefixeddesignationD8148;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversaspectroscopicprocedurefordeterminingthelevelofsuspendedwaterandparticulatecontamination(haze)inliquidmiddledistillatefuelsincludingthoseblendedwithsynthesizedhydrocarbonsorbiofuels.1.1.1Anordinal,whole-number,InstrumentHazeRating(IHR)from1to6andaHazeClarityIndex(HCI)from50.0to100.0aredeterminedonatestspecimenatatemperatureof22.0°C62.0°C.1.1.1.1Thestatedprecisiononlyappliesatthistemperature.1.1.1.2Fuelsanalyzedatothertestspecimentemperaturesmaynotbeasprecise.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.OtherunitsofmeasurementincludedinthisstandardaredefinedinSection3.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D4057PracticeforManualSamplingofPetroleumandPetroleumProductsD4175TerminologyRelatingtoPetroleumProducts,LiquidFuels,andLubricantsD4176TestMethodforFreeWaterandParticulateContami-nationinDistillateFuels(VisualInspectionProcedures)D4177PracticeforAutomaticSamplingofPetroleumandPetroleumProductsD6300PracticeforDeterminationofPrecisionandBiasDataforUseinTestMethodsforPetroleumProducts,LiquidFuels,andLubricants3....
