The Volcanic and Geothermal Fluid Analyses Laboratory in the Department of Earth and Planetary Sciences at the University of New Mexico is equipped with a state of the art gas chromatography system for the quantification of He, Ar, N2, H2, O2, CH4, CO and hydrocarbons. We use a dual carrier gas system, a Dual Thermal Conductivity Detector and Flame Ionization Detector. A vacuum system is used for sample inlet as well as splitting of gas samples for subsequent isotopic analyses. The wet chemsitry component of the laboratory allows us to quantify the CO2, SO2, H2S, HCl, and HF concentration of the samples.