Designation:D2843−16StandardTestMethodforDensityofSmokefromtheBurningorDecompositionofPlastics1ThisstandardisissuedunderthefixeddesignationD2843;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisfire-test-responsetestmethodcoversalaboratoryprocedureformeasuringandobservingtherelativeamountsofsmokeobscurationproducedbytheburningordecompositionofplastics.Itisintendedtobeusedformeasuringthesmoke-producingcharacteristicsofplasticsundercontrolledconditionsofcombustionordecomposition.Correlationwithotherfireconditionsisnotimplied.Themeasurementsaremadeintermsofthelossoflighttransmissionthroughacollectedvolumeofsmokeproducedundercontrolled,stan-dardizedconditions.Theapparatusisconstructedsothattheflameandsmokeisobservableduringthetest.21.2Duringthecourseofcombustion,gasesorvapors,orboth,areevolvedthatarepotentiallyhazardoustopersonnel.Adequateprecautionsshallbetakentoprotecttheoperator.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationpurposesonly.1.4Thisstandardisusedtomeasureanddescribetheresponseofmaterials,products,orassembliestoheatandflameundercontrolledconditions,butdoesnotbyitselfincorporateallfactorsrequiredforfirehazardorfireriskassessmentofthematerials,products,orassembliesunderactualfireconditions.1.5Firetestingisinherentlyhazardous.Adequatesafe-guardsforpersonnelandpropertyshallbeemployedinconductingthesetests.Specificsafetywarningstatementsaregivenin1.2and9.13.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.NOTE1—Thereisnoknow...
