Designation:D3685/D3685M−13StandardTestMethodsforSamplingandDeterminationofParticulateMatterinStackGases1ThisstandardisissuedunderthefixeddesignationD3685/D3685M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodsdescribeprocedurestodeterminethemassemissionratesofparticulatematterandcollectedresidueingaseousstreamsbyin-stacktestmethods(TestMethodA)orout-of-stacktestmethods(TestMethodB).1.2Thesetestmethodsaresuitableformeasuringparticu-latematterandcollectedresidueconcentrations.1.3Thesetestmethodsincludeadescriptionofequipmentandprocedurestobeusedforobtainingsamplesfromeffluentductsandstacks,adescriptionofequipmentandproceduresforlaboratoryanalysis,andadescriptionofproceduresforcalcu-latingresults.1.4Thesetestmethodsareapplicableforsamplingparticu-latematterandcollectedresidueinwet(TestMethodAorB)ordry(TestMethodA)streamsbeforeandafterparticulatemattercontrolequipment,andfordeterminationofcontroldeviceparticulatemattercollectionefficiency.1.5Thesetestmethodsarealsoapplicablefordeterminingcompliancewithregulationsandstatuteslimitingparticulatematterexistinginstackgaseswhenapprovedbyfederalorstateagencies.1.6Theparticulatematterandcollectedresiduesamplescollectedbythesetestmethodsmaybeusedforsubsequentsizeandchemicalanalysis.1.7Thesetestmethodsdescribetheinstrumentation,equipment,andoperationalprocedures,includingsiteselection,necessaryforsamplinganddeterminationofparticu-latemassemissions.Thesetestmethodsalsoincludeproce-duresforcollectionandgravimetricdeterminationofresiduescollectedinanimpinger-condensertrain.Thesamplingandanalysisofparticulatemattermaybeperformedindependentlyorsimultaneouslywiththedeterminationofcollectedresidue.1.8Thesetestmethodsprovidefortheuseofoptionalfilterdesignsandfiltermaterialasnecessarytoaccommodatethewid...
