Designation:D6403−99(Reapproved2020)StandardTestMethodforDeterminingMoistureinRawandSpentMaterials1ThisstandardisissuedunderthefixeddesignationD6403;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodisintendedforuseindeterminingthemoisturecontentinrawandspentmaterialsthatareextractedfortanninanalysis.Themoisturecontentofthesampleisoperationallydefinedtobeequaltotheweightlossexperiencedasaresultoftheevaporationwhichoccursinthedryingoven.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D6405PracticeforExtractionofTanninsfromRawandSpentMaterials2.2ALCAMethodsA6MoistureinRawandSpentMaterials33.Terminology3.1Definitions:3.1.1rawmaterial—anyofthevariouspartsofplantsthatareusedasasourceofvegetabletannins.3.1.2spentmaterial—planttissueby-productsfromindus-trialprocesseswhichmaycontainsignificantquantitiesofvegetabletannins.3.1.3tannin—anastringentsubstancefoundinthevariouspartsofplantssuchasbark,wood,leaves,nuts,fruits,roots,etc.3.1.4vegetabletannins—mixturesofsubstances(naturalproducts)obtainedfromplanttissuesbywaterextractionwhichhavethechemicalandphysicalpropertiesnecessarytoconvertanimalhidesandskinsintoleather....
