Designation:E2170–01(Reapproved2008)StandardTestMethodforDeterminingAnaerobicBiodegradationPotentialofOrganicChemicalsUnderMethanogenicConditions1ThisstandardisissuedunderthefixeddesignationE2170;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversscreeningproceduresforthedeterminingthebiodegradationpotentialoforganicchemicalsundermethanogenicconditionsusinganinoculumfromanaerobicsewagetreatment.Theconditionsdescribedinthistestmethodarenotnecessarilyoptimalforbiodegradation,sinceitinvolvesadiluteinoculumandarelativelyhighconcentrationoftestchemical.1.2Thetestmethodisapplicabletomostorganicchemicals,assumingthattheycanbeaccuratelydosedintothetestsystems.Thetestisnotapplicabletochemicalsthatareinhibitoryattheconcentrationusedinthetestorthosewhosevolatilitygeneratessignificantheadpressureinthetestvessels.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninSection8.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWaterD5904TestMethodforTotalCarbon,InorganicCarbon,andOrganicCarboninWaterbyUltraviolet,PersulfateOxidation,andMembraneConductivityDetection3.Terminology3.1Definitions:3.1.1biodegradationpotential—theabilityofanorganicchemicaltoundergopartialorcompletebiodegradationundertheconditionsofthetest.Inthecontextofthistest,biodegra-dationisevidencedbytheproductionofmethaneandcarbondioxide,whichismeasuredasanincreasedpressureintheheadspaceandincreaseddissolvedinorganiccarboninthemedium.3.1.2digestersludge—sludgewhichisobtainedfromananaerobicreactorusedtoreducethesolidsrecoveredandproducedduringthe...
