Profile: Valco Instruments manufactures a wide range of products for gas chromatography, liquid chromatography, flow injection analysis, flow cytometry, HPLC, SFE, and SFC. We offer actuators, calibration gas standards, columns, fittings, flow/pressure & on/off controllers, gas purifiers, GC accessories, GC detectors, hayesep porous polymers, injectors/valves, liquid handling products, portable gas monitors, syringes, tools, trace gas analyzers and tubing.