Designation:D4899−99(Reapproved2020)StandardPracticeforAnalysisofVegetableTanningMaterials—General1ThisstandardisissuedunderthefixeddesignationD4899;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticeisintendedforuseinthechemicalanalysisofallvegetabletanningmaterials.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D4900TestMethodforLignosulfonates(SulfiteCellulose)inTanningExtractsD4901PracticeforPreparationofSolutionofLiquidVeg-etableTanninExtractsD4902TestMethodforEvaporationandDryingofAnalyti-calSolutionsD4903TestMethodforTotalSolidsandWaterinVegetableTanningMaterialExtractsD4904PracticeforCoolingofAnalyticalSolutionsD4905PracticeforPreparationofSolutionofSolid,PastyandPowderedVegetableTanninExtractsD6401TestMethodforDeterminingNon-TanninsandTan-nininExtractsofVegetableTanningMaterialsD6402TestMethodforDeterminingSolubleSolidsandInsolublesinExtractsofVegetableTanningMaterialsD6403TestMethodforDeterminingMoistureinRawandSpentMaterialsD6404PracticeforSamplingVegetableMaterialsContain-ingTanninD6405PracticeforExtractionofTanninsfromRawandSpentMaterialsD6406TestMethodforAnalysisofSugarinVegetableTanningMaterialsD6...
