Vaping cartridge heating element compositions and evidence of high temperatures
Fig 2
6.3-10x stereozoom microscope images of components from used CCell cartridge associated with EVALI case.
a) bottom of cartridge end cap showing battery contact. b) battery contact in white polymer gasket. c) air tube with fluid holes and filament wire protruding through rubbery end cap. d) filament wire leads, ceramic, and fibrous insulation partially exposed. See Fig 11D for composition of boxed region. e) ceramic material broken to liberate filament. f) black, burnt material inside oil-soaked ceramic, suggesting exposure to high temperatures.