Designation:D1401−12´1StandardTestMethodforWaterSeparabilityofPetroleumOilsandSyntheticFluids1ThisstandardisissuedunderthefixeddesignationD1401;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.ε1NOTE—Subsection11.1wascorrectededitoriallyinOctober2015.1.Scope*1.1Thistestmethodcoversmeasurementoftheabilityofpetroleumoilsorsyntheticfluidstoseparatefromwater.Althoughdevelopedspecificallyforsteam-turbineoilshavingviscositiesof28.8mm2/sto90mm2/sat40°C,thistestmethodmaybeusedtotestoilsofothertypeshavingvariousviscositiesandsyntheticfluidsatothertesttemperatures.Itisrecommended,however,thatthetesttemperatureberaisedto82°C61°Cwhentestingproductsmoreviscousthan90mm2/sat40°C.Forhigherviscosityoilswherethereisinsufficientmixingofoilandwater,TestMethodD2711isrecommended.Othertesttemperaturessuchas25°Cmayalsobeused.A1%sodiumcholoride(NaCl)solutionorsyntheticseawatermaybeusedinplaceofdistilledwaterwhentestingcertainoilsorfuelsusedinmarineapplications.1.2Whentestingsyntheticfluidswhoserelativedensitiesaregreaterthanthatofwater,theprocedureisunchanged,butitshouldbenotedthatthewaterwillprobablyfloatontheemulsionorliquid.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecificwarningstatements,seeSection6.2.ReferencedDocuments2.1ASTMStandards:2D665TestMethodforRust-PreventingCharacteristicsofInhibitedMineralOilinthePresenceofWaterD1141PracticeforthePreparationofSubstituteOceanWaterD1193SpecificationforR...