Designation:D3989−01(Reapproved2019)´1StandardTestMethodforTotalRareEarthMetalsinPaintDriersbyEDTAMethod1ThisstandardisissuedunderthefixeddesignationD3989;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—Footnote4titleupdatedtocurrenteditioninOctober2019.1.Scope1.1Thistestmethodcoversthetitrimetricdeterminationofrareearthmetalsinliquidrareearthmetaldriersandutilizesthedisodiumsaltofethylenediaminetetraaceticaciddihydrate(EDTA).1.2Thistestmethodislimitedtothedeterminationoftherareearthmetalcontentofaliquidrareearthmetaldrierthatdoesnotcontainotherdrierelements.Themethodisnotapplicabletodrierblends.1.3Thistestmethodhasbeentestedinconcentrationsof6%ceriumand6%rareearthmetals,butthereisnoreasontobelievethatitisnotsuitableforhigherorlowerdriermetalconcentrationsprovidedspecimensizeisadjustedaccordingly.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D600SpecificationforLiquidPaintDriersD1193SpecificationforReagentWaterE180PracticeforDeterminingthePrecisionofASTMMethodsforAnalysisandTestingofIndustrialandSpe-cialtyChemicals(Withdrawn2009)3E300PracticeforSamplingIndustrialChemicals3.SummaryofTestMethod3.1Adilutedsolutionofthedrie...
