Designation:D2961/D2961M−19StandardPracticeforSingle-StageTotalMoistureLessthan15%inCoalReducedto2.36mm[No.8Sieve]Topsize1ThisstandardisissuedunderthefixeddesignationD2961/D2961M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thispracticecoversasingle-stageprocedureforthedeterminationoftotalmoisturelessthan15%incoalreducedto2.36mm[No.8sieve]topsize.Thispracticeisfordetermi-nationoftotalmoistureonly.Materialssubjectedtothistestshallnotbeusedinthedeterminationofothertestparameters.Itisrecognizedthattheconditionsofthetestcanincreasethepotentialforsignificantoxidationeffectsonsomecoals.Iftheoxidationpotentialisofconcern,theuseofthissingle-stagemethodshallinvolveprioragreementbetweenthepartiesinvolved.Thispracticeshallnotbeconstruedastherefereestandardpracticefortotalmoisture.Forrefereepurposes,usersofthispracticearereferredtoTestMethodD3302/D3302Mformoisturedeterminationmethodswhicharenotassusceptibletooxidationeffects.1.2Statisticalanalysisofdatafromseveralsourcesindi-catesthatata95%confidencelevel,thereisstatisticallynodifferencebetweenthemeanvalueoftheresultsobtainedbyPracticeD2961/D2961MandTestMethodD3302/D3302M(thatis,nobiasisdetectedbetweenthetwomethodsatthe95%confidencelevel)formoisturelevelsbetween1.4%and15.8%.Thesetwostandardswerenotcomparedinthisstudyforsomeranksofcoalincludingligniteandanthracite.21.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemarenotnecessarilyexactequivalents;therefore,toensureconformancewiththestandard,eachsystemshallbeusedindependentlyoftheother,andvaluesfromthetwosystemsshallnotbecombined.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,healt...
