Designation:D482−19Designation:4/96StandardTestMethodforAshfromPetroleumProducts1ThisstandardisissuedunderthefixeddesignationD482;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thistestmethodcoversthedeterminationofashintherange0.010%to0.180%bymass,fromdistillateandresidualfuels,gasturbinefuels,crudeoils,lubricatingoils,waxes,andotherpetroleumproducts,inwhichanyash-formingmaterialspresentarenormallyconsideredtobeundesirableimpuritiesorcontaminants(Note1).Thetestmethodislimitedtopetroleumproductswhicharefreefromaddedash-formingadditives,includingcertainphosphoruscompounds(Note2).NOTE1—Incertaintypesofsamples,alloftheash-formingmetalsarenotretainedquantitativelyintheash.Thisisparticularlytrueofdistillateoils,whichrequireaspecialashprocedureinordertoretainmetalsquantitatively.NOTE2—Thistestmethodisnotintendedfortheanalysisofunusedlubricatingoilscontainingadditives;forsuchsamplesuseTestMethodD874.Neitherisitintendedfortheanalysisoflubricatingoilscontainingleadnorforusedenginecrankcaseoils.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thepreferredexpressionofthepropertyismass%.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.Reference...
