Designation:D4007−11´1ManualofPetroleumMeasurementStandards(MPMS),Chapter10.3StandardTestMethodforWaterandSedimentinCrudeOilbytheCentrifugeMethod(LaboratoryProcedure)1ThisstandardisissuedunderthefixeddesignationD4007;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—ReferencedDocumentsandAPIinformationwaseditoriallycorrectedinJuly2013.1.Scope*1.1Thistestmethoddescribesthelaboratorydeterminationofwaterandsedimentincrudeoilsbymeansofthecentrifugeprocedure.Thiscentrifugemethodfordeterminingwaterandsedimentincrudeoilsisnotentirelysatisfactory.Theamountofwaterdetectedisalmostalwayslowerthantheactualwatercontent.Whenahighlyaccuratevalueisrequired,therevisedproceduresforwaterbydistillation,TestMethodD4006(APIMPMSChapter10.2)(Note1),andsedimentbyextraction,TestMethodD473(APIMPMSChapter10.1),shallbeused.NOTE1—TestMethodD4006(APIMPMSChapter10.2)hasbeendeterminedtobethepreferredandmostaccuratemethodforthedeterminationofwater.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Specificwarningstatementsappearin6.1,8.3,andA1.5.4.2.ReferencedDocuments2.1ASTMStandards:2D95TestMethodforWaterinPetroleumProductsandBituminousMaterialsbyDistillation(APIMPMSChapter10.5)D473TestMethodforSedimentinCrudeOilsandFuelOilsbytheExtractionMethod(APIMPMSChapter10.1)D665TestMethodforRust-PreventingCharacteristicsofInhibitedMineralOilinthePresenceofWaterD1796TestMethodforWaterandSedimentinFuelOilsbytheCentrifugeMethod(LaboratoryProcedure)(APIMPMSChapter10.6)D4006TestMethodforWaterinCrudeOilbyDis...
