The HP 6890 Series gas chromatograph system includes single Split/Splitless Injector, single Flame Ionization Detector, Electronic Pressure Control on detector and injector. The HP 6890 series GC features electronic pneumatics control of all gas pressures and flows. Onboard sensors automatically compensate for ambient temperature changes and barometric pressure differences to routinely achieve more accurate and reproducible results. By providing stable results, EPC reduces recalibration frequency and improves laboratory productivity.