Designation:D6303–98AnAmericanNationalStandardStandardTestMethodforFormaldehydeinWater1ThisstandardisissuedunderthefixeddesignationD6303;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftheform-aldehydemonomerconcentrationinwaterandwastewater.1.2Thistestmethodissuitableforfreeformaldehydeconcentrationsintherangeof0.2to7.0mg/L.Forsamplescontainingconcentrationsgreaterthan7mg/L,dilutewithreagentwaterpriortoanalysis.Samplescontainingbetween0.02and0.5mg/Lmayberunusinga10-cmcell.1.3Thistestmethodisforusewithreagentwaterandwastewater.Itistheuser’sresponsibilitytoensurethevalidityofthistestmethodforwatersofuntestedmatrices.1.4Formaldehydepolymersreactpartiallyorslowly,orboth,makingthistestmethodunsuitableforanalysisofthesecompounds.1.5Forspecifichazardsstatements,seeSection9.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimita-tionspriortouse.2.ReferencedDocuments2.1ASTMStandards:D1129TerminologyRelatingtoWater2D1192SpecificationforEquipmentforSamplingWaterandSteaminClosedConduits2D1193SpecificationforReagentWater2D1293TestMethodsforpHofWater2D2777PracticeforDeterminationofPrecisionandBiasofApplicableTestMethodsofCommitteeD-19onWater2D3370PracticesforSamplingWaterfromClosedCon-duits2D3856GuideforGoodLaboratoryPracticesinLaborato-riesEngagedinSamplingandAnalysisofWater2D4210PracticeforInterlaboratoryQualityControlProce-duresandaDiscussiononReportingLow-LevelData2D4453PracticeforHandlingofUltra-PureWaterSamples2E60PracticeforPhotometricandSpectrophotometricMethodsforChemicalAnalysisofMetals3E200PracticeforPreparation,Standardization,andStor-ageofStandard...
