Sample vial and vial closure device for use in gas analysis and method of using the same

摘要: The invention comprises a vial closure device, sample incorporating such and certain methods of using device. device are intended to contain gaseous or headspace gas present above liquid solid material, so that the can be conveniently analysed, typically by means an autosampler connected analytical instrument as mass spectrometer. Mass spectrometric determining isotopic composition hydrogen oxygen comprised in aqueous samples contained vials fitted with devices disclosed. hollow body member locatable mouth vial, first seal for making substantially gas-tight between exterior said vial. aperture closing when required, second seal, through which sampling may inserted. is operable open insertion close withdrawn.