Designation:D937−07(Reapproved2019)BritishStandard4698Designation:179/79(95)StandardTestMethodforConePenetrationofPetrolatum1ThisstandardisissuedunderthefixeddesignationD937;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversmeasuringwithapenetrometerthepenetrationofpetrolatumasanempiricalmeasureofconsistency.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D217TestMethodsforConePenetrationofLubricatingGrease3.Terminology3.1Definitions:3.1.1penetrationofpetrolatum—thedepth,intenthsofamillimetre,thatastandardconewillpenetratethesampleunderfixedconditionsofmass,time,andtemperature.3.1.2penetrometer,n—aninstrumentthatmeasurestheconsistencyorhardnessofsemiliquidtosemisolidmaterialsbymeasuringthedepthtowhichaspecifiedconeorneedleunderagivenforcefallsintothematerial.3.1.2.1Discussion—Inthistestmethod,astandardpen-etrometercone(seeTestMethodsD217)isusedtodeterminetheconsistencyofpetrolatum.Thepenetrationforceisdeter-minedbythetotalmassoftheconeandshaft.4.SummaryofTestMethod4.1Thesampleiscompletelymeltedbyheatingtoaminimumtemperatureof82°C...
