Designation:D4427−13StandardClassificationofPeatSamplesbyLaboratoryTesting1ThisstandardisissuedunderthefixeddesignationD4427;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1Thisclassificationisasystemforsubdividingandassigningnomenclaturetopeatsamplesthroughlaboratorytests.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D653TerminologyRelatingtoSoil,Rock,andContainedFluidsD1997TestMethodforLaboratoryDeterminationoftheFiberContentofPeatSamplesbyDryMassD2974TestMethodsforMoisture,Ash,andOrganicMatterofPeatandOtherOrganicSoilsD2976TestMethodforpHofPeatMaterials(Withdrawn2013)3D2980TestMethodforVolumeMass,Moisture-HoldingCapacity,andPorocityofSaturatedPeatMaterialsD3740PracticeforMinimumRequirementsforAgenciesEngagedinTestingand/orInspectionofSoilandRockasUsedinEngineeringDesignandConstruction3.Terminology3.1Definitions—Fordefinitionsofcommontechnicaltermsinthisstandard,refertoTerminologyD653.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1absorbency—theamountofwaterbymassthatcanbeheldbythepeat.Thisamountisexpressedintermsofthewater-holdingcapacityasmeasuredusingTestMethodD2980.3.2.2acidity—expressedasthepHofthepeatinwaterasmeasuredusingTestMethodD2976.3.2.3ashcontent—thepercentagebydrymassofmaterialremainingaftertheovendrypeatisburned,usingthemethodsdescribedinTestMethodsD2974.3.2.4botanicalcomposition—thedominantplantgenus,genera,orinformalplantgroupidentifiedbyvisualobservationascomprisingaportionofthefiberinthepeat.3.2.5fibercontent—thedrymasso...
