Designation:E1358−97(Reapproved2013)StandardTestMethodforDeterminationofMoistureContentofParticulateWoodFuelsUsingaMicrowaveOven1ThisstandardisissuedunderthefixeddesignationE1358;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThistestmethodprovidesanalternativemethodtoMethodE871,forthedeterminationofthemoistureofparticu-latewoodfuels.ParticulatewoodfuelsaredefinedinE1126.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E871TestMethodforMoistureAnalysisofParticulateWoodFuelsE1126TerminologyRelatingtoBiomassFuels(Withdrawn2003)33.SummaryofTestMethod3.1Moistureisdeterminedbyestablishingthelossinmassofthesamplewhenheatedunderrigidlycontrolledconditionsoftemperature,time,samplemass,andequipmentspecifica-tions.44.SignificanceandUse4.1Thistestmethodprovidesarapiddeterminationformoistureinparticulatewoodfuelsinseveralminutes.Thestandardmethod,E871,requiresaminimumof18h.Thismethodisapplicabletosituationssuchasthespot-checkofthemoisturedeliveredbytruckwhereaquickindicationofthemoistureofwooddeliveredisdesirable.5.Apparatus5.1MicrowaveOven—Anystandardcommercialmicro-waveovenhavingapoweroutputofatleast600Wcanbeused.6.Procedure6.1Obtaina50gsampleofthewoodtobetestedusingtechniquesoutlinedinMethodE871.6.2Determinetheweightof3sheetsofstandardpapertowelsplacedontopofeachother.RecordthismassasMT(MassofTowels).6.3Placethe50gsampleofthewoodontopofthepapertowelsanddeterminethemassoftheinitialsample.RecordthemassasMSTI(MassofSampleandTow...
