A gas chromatograph is a tool for the separation and analysis of multi-component mixtures.Detectable substances: benzene, cyclohexanone, xylene, ethanol, ethylbenzene, isopropanol, propanol, butanol, ethyl acetate, isopropyl acetate, n-butanol, toluene, n-butyl acetate, phosmet, 4-methyl-2-pentanone, etc.