Designation:D8407−21StandardGuideforMeasurementTechniquesforFormaldehydeinAir1ThisstandardisissuedunderthefixeddesignationD8407;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidedescribesanalyticalmethodsfordeterminingformaldehydeconcentrationsinair.1.2Theguideisprimarilyfocusedonformaldehydemea-surementtechnologiesapplicabletoindoor(includinginve-hicleandworkplace)airandassociatedenvironments(thatis,chambersorbags,orboth,usedforformaldehydeemissiontesting).Thedescribedtechnologiesmaybeapplicabletootherenvironments(ambientoutdoor).1.3Thisguidereviewsarangeofcommerciallyavailabletechnologiesthatcanbeusedtomeasureindoorairformalde-hydeconcentrations.Thesetechnologiestypicallycanmeasureairborneformaldehydeconcentrationswithdetectionlimitsintherangeof0.04ppbv(0.05µgm-3)to10ppbv(12µgm-3).Thedescribedtechnologiesaretypicallyappliedtoresearchorregulatoryapplicationsandnotconsumerleveluses.1.4Thisguidedescribestheprinciplesbehindeachmethodandtheiradvantagesandlimitations.1.5Thisguidedoesnotattempttodifferentiatebetweentheeffectivenessofthemethodsnordetermineequivalenceofthemethods.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.8Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStan...
