Designation:D8126−21StandardTestMethodforEfficientBasicityDeterminationbyPotentiometricHydrochloricAcidTitration1ThisstandardisissuedunderthefixeddesignationD8126;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversaprocedureforthedetermina-tionoftheefficientbasicity(EBas)innewmarinecylinderlubricantsthatlubricatetheupperpart,thatis,piston-ring-cylinderarea,oftwo-strokemarineengines.1.2Thistestmethodhasbeendevelopedformarinecylinderlubricants,havingbasenumber(BN)(measuredbyTestMethodD2896)from20mgKOH/gto100mgKOH⁄g,andanEBasfrom10mgKOH/gto36mgKOH/g.1.3Inthistestmethod,onlytheefficientbasicityisdetermined,correspondingtothecomponentsorpartofcom-ponentsthathaveamajorroleinneutralizationoftheacidicspeciesformedinthecombustionofthefuelinthemarineengine.Itdifferentiatesbetweenthefastestreactingspeciesandthelastonetoreactlikeoverbasingcompoundsindetergent(classicallymineralcalciumcarbonate,CaCO3).Thevaluesobtained,however,areintendedtobecomparedwiththeothervaluesobtainedbythistestmethodonly;basenumbersobtainedbythistestmethodarenotintendedtobeequaltovaluesbyothertestmethods.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.SomespecifichazardsstatementsaregiveninSections6and7.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrie...
