Designation:C562−15AnAmericanNationalStandardStandardTestMethodforMoistureinaGraphiteSample1ThisstandardisissuedunderthefixeddesignationC562;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thistestmethodprovidesapracticaldeterminationforthepercentageofmoistureinagraphitesample.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C561TestMethodforAshinaGraphiteSample3.Terminology3.1Definitions:3.1.1moisturecontent,n—percentagecontentbyweightofvolatilemoisturepresentinthegraphitespecimenthathasbeenexposedtoambientconditions.4.SignificanceandUse4.1Thistestmethodisapplicableonlyfordeterminationofthevolatilemoisturecontentresultingfromadsorptionofwatervaporfromtheatmosphere,andisnotintendedtogiverepresentativemoisturedataforgraphitethathasbeenexposedtoliquidwatercontamination.5.Interferences5.1Finalweights(andthereforepercentmoisturevalues)maybeinfluencedbythefollowing:5.1.1Typeandconditionofdesiccant.5.1.2Ambientrelativehumidityatthetimeofthetest.5.1.3Timingandprocedureformovingsamplesfromdes-iccatortothebalance.5.1.4Adsorptivityofthegraphitesamplerelativetotheadsorptivityofthedesiccantused.5.1.5Residencytimeinthedesiccator.6.Apparatus6.1AluminaCeramicorPlatinumCrucibleorDish,suit-ableforholdingsample(subsequentlycalledsampleholder).6.2AnalyticalBalance,capableofweighingto60.0002g.6.3DryingOven,airconvectiontype,capableofbeingcontrolledto110°C62°C.6.4...
