More on mass spectrometers and aerosol propellants.
D000335:Aerosol Propellants; D000336:Aerosols; D000777:Anesthetics; D005740:Gases; D013058:Mass Spectrometry
D000335:Aerosol Propellants; D000336:Aerosols; D000777:Anesthetics; D005740:Gases