Designation:D7214−20StandardTestMethodforDeterminationoftheOxidationofUsedLubricantsbyFT-IRUsingPeakAreaIncreaseCalculation1ThisstandardisissuedunderthefixeddesignationD7214;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThistestmethodwasjointlydevelopedwith“GroupementFrancaisdeCoordination”(GFC),technicalcommitteeLM5and“CoordinatingEuropeanCouncil”(CEC)SurveillanceGroupT-048forthepurposeofmonitoringtheoxidationstabilityofartificiallyagedautomotivetransmissionfluids.ThistestmethodhasbeenusedintheCECL-48-A-00methodasanendoftestmeasurementparameter.1.Scope*1.1Thistestmethodcoversthedeterminationoftheoxida-tionofusedlubricantsbyFT-IR(FourierTransformInfraredSpectroscopy).Itmeasurestheconcentrationchangeofcon-stituentscontainingacarbonylfunctionthathaveformedduringtheoxidationofthelubricant.1.2Thistestmethodmaybeusedtoindicaterelativechangesthatoccurinanoilunderoxidizingconditions.Thetestmethodisnotintendedtomeasureanabsoluteoxidationpropertythatcanbeusedtopredictperformanceofanoilinservice.1.3Thistestmethodwasdevelopedfortransmissionoilswhichhavebeendegradedeitherinservice,orinalaboratorytest,forexampleabulkoxidationtest.Itmaybeusedforotherin-serviceoils,butthestatedprecisionmaynotapply.1.4Theresultsofthistestmethodmaybeaffectedbythepresenceofothercomponentswithanabsorbancebandinthezoneof1600cm-1to1800cm-1.LowPAIvaluesmaybedifficulttodetermineinthosecases.Section6describesthesepossibleinterferencesinmoredetail.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatory...
