Designation:D1290−95(Reapproved2021)StandardTestMethodforSedimentinWater-EmulsionPolishesbyCentrifuge1ThisstandardisissuedunderthefixeddesignationD1290;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofsedimentinwater-emulsionpolishesbymeansofacentrifuge.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1796TestMethodforWaterandSedimentinFuelOilsbytheCentrifugeMethod(LaboratoryProcedure)3.SignificanceandUse3.1Thistestmethoddeterminestheamountofsedimentinwater-emulsionpolishes.Sedimentisgenerallybelievedtohavenegativeeffectsonwater-emulsionpolishproperties.4.Apparatus4.1CentrifugeandTubes,conformingtoParagraphs5.1and5.2onCentrifugeandCentrifugeTubesofTestMethodD1796.5.Sample5.1Thesampleshallbethoroughlyrepresentativeofthematerialinquestion,andtheportionusedforthetestshallbethoroughlyrepresentativeofthesampleitself.6.Procedure6.1Measure100mLofthewater-emulsionwaxintoeachoftwocentrifugetubesandstopperthetubes.Balancethetwotubesintheirholders.6.2Placethetwotubesonoppositesidesoftheheadandwhirlfor10minatarate,calculatedfromtheequationinParagraph5.1.5underCentrifugeofTestMethodD1796,sufficientt...
