||A gas chromatograph that separates and analyses gas mixtures in water or air. The instrument includes an injector, autosampler, capillary column and one or more detectors. The column oven accepts packed or fused silica capillary columns, while the instrument accommodates a range of standard and capillary injectors, including split/splitless, capillary septum-equipped programmable, large bore capillary, large bore capillary flash, packed column and packed flash types. Possible detector types are flame ionisation, thermionic sensitive, electron capture, flame photometric, thermal conductivity, electrolytic conductivity and photo-ionisation. Optional carrier gas and oxygen filters may also be incorporated into the instrument. The equipment is controlled by a built-in microcomputer and can perform electron-impact, chemical ionisation, and negative ion analysis. The instrument was originally manufactured by Varian, Inc., which was bought by Agilent Technologies in 2010.