Designation:D2961−11StandardTestMethodforSingle-StageTotalMoistureLessthan15%inCoalReducedto2.36-mm(No.8Sieve)Topsize1ThisstandardisissuedunderthefixeddesignationD2961;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversasingle-stageprocedureforthedeterminationoftotalmoisturelessthan15%incoalreducedto2.36-mm(No.8sieve)topsize.Thistestmethodisfordeterminationoftotalmoistureonly.Materialssubjectedtothistestshallnotbeusedinthedeterminationofothertestparameters.Itisrecognizedthattheconditionsofthetestcanincreasethepotentialforsignificantoxidationeffectsonsomecoals.Iftheoxidationpotentialisofconcern,theuseofthissingle-stagemethodshallinvolveprioragreementbetweenthepartiesinvolved.Thistestmethodshallnotbeconstruedastherefereestandardtestmethodfortotalmoisture.Forrefereepurposes,usersofthistestmethodarereferredtoTestMethodD3302formoisturedeterminationmethodswhicharenotassusceptibletooxidationeffects.1.2Statisticalanalysisofdatafromseveralsourcesindi-catesthatata95%confidencelevel,thereisstatisticallynosignificantdifferencebetweenthemeanvalueoftheresultsobtainedbyD2961andD3302(thatis,nobiasisdetectedbetweenthetwomethodsatthe95%confidencelevel)formoisturelevelsbetween1.4%and15.8%.Thesetwotestmethodswerenotcomparedinthisstudyforsomeranksofcoalincludingligniteandanthracite.(See10.2.)1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D121TerminologyofCoalandCokeD2013PracticeforPreparingCoalSamplesforAnalysisD3302Tes...
