The SRI model 310 Educational Gas Chromatograph (GC) system was recently purchased by GGC to teach fundamental principles of gas chromatography in undergraduate chemistry labs. This model includes a 4-filament Themal Conductivity Detector (TCD) that can heat to 275°C, and a 6-foot silica-packed HayeSep D column. Data acquisition and method/temperature programming are controlled by a built-in single channel PeakSimple data system. The column oven can be programmed up to 300°C with multiple ramps and holds, and is equipped with fast cool-down fans. An electronic pressure control module (EPC) for the carrier gas provides solid retention time reproducibility. Helium is used as a carrier gas for the system, and the carrier gas is passed through a triple filter to remove moisture and other contaminants.