Specifications Heated devices. Five standard heated zones: two detectors, two inlets, one additional zone. Stored Methods: Two. Capillary split/splitless. Range up to 400°C in 1°C increments. The back pressure design allows the split flow rate to be adjusted independently without affecting the column flow rate. Built-in septum purge at 3 ml/min. Accepts columns up to 1.2mm outside diameter. Multi-mode design includes split and splitless injection. Splitless tracking time variable in 0.01 min increments. Thermal conductivity detector. Range up to 400°C. Single-filament design (for single column) has fluidic switching of reference and analyte carrier gas flows. Minimum detectable: 400 pg/ml carrier gas - equivalent to 1 ppm neon in 1 ml air. Linear dynamic range: +/- 5% over the 10^5 range. Digital gain setting can be time-programmed via the keyboard. Conditions: detector. -100°C, 45 ml/min switching flow and 30 ml/min analyte flow of helium, sample material propane. Flame photometric detector. Range up to 300°C. Capillary columns with an inner diameter of 100-530 µm fit through the transfer line to the base of the flame. Two combustion modes: air/hydrogen or oxygen/hydrogen. Detector signal display to detect when the flame is burning. Push button flame ignition. Sulfur mode: Sensitivity up to 20 pg S/second, range 10^3, selectivity 10^5 g S/g C. Phosphorus mode: Sensitivity up to 0.9 pg P/second, range 10^4, selectivity 10^6 g P/g C. Column oven. Operating range: 4°C above ambient temperature to 450°C. Enter the setpoints: 1°C for temperatures, 0.1°C for program rates. Programming: Rates from 0.1 to 70°C per minute, maximum run time 650 minutes, three ramps with initial and final stopping points. This reconditioned HP 5890 II GC with Dual TCDs, Dual EPC Controlled On-Column Inlets is in great condition Labprocure is responsible for this unit.