Designation:D6716−08(Reapproved2013)StandardTestMethodforTotalAshinWetBlueorWetWhite1ThisstandardisissuedunderthefixeddesignationD6716;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftotalashinwetblueandwetwhite.1.2Fortotalashinwetwhite,theprocedureisidentical;substitutewetwhiteforwetblueinthestandard.1.3Totalashinwetbluemaybereporteduponanumberofdifferentbases(forexample,fat-free,moisture-free,asreceived,excludingchromium,andsoforth).Beforeproceed-ingwithanytests,itisveryimportanttodetermineuponwhichbasisthatthetotalashistobereportedandtoidentifyallothertestmethodsthatwillberequiredtobeexecutedinordertoachievethedeterminedreportingmethod.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D3495TestMethodforHexaneExtractionofLeatherD6658TestMethodforVolatileMatter(Moisture)ofWetBluebyOvenDryingD6659PracticeforSamplingandPreparationofWetBlueforPhysicalandChemicalTestsD6714TestMethodforChromicOxideinAshedWetBlue(PerchloricAcidOxidation)3.Terminology3.1Definitions:3.1.1Thetermsanddefinitionsemployedwithinthistestmethodarecommonlyusedinnormallaboratorypracticeandrequirenospecialcomment.4.SummaryofTestMethod4.1Theweighedsampleisignitedinairat600625°Cuntilconstantmassisattained.Theweighedresidualmatteristermed“ash”andiscalculatedasapercentageoftheoriginalsample.5.SignificanceandUse5.1Thistestmethodisusefulindeterminingtheapproxi-mateamountofnonvolatileinorganicmaterialinwetblue.Thismayb...
