18 - Gas Chromatograph

Specifications: Data communications HP-IB, RS-232-C, and two analog output channels (1-mV, 1-V, and 10-V output available) as standard INET interface optional Heated zones Independent heated zones, not including oven: six (two inlets, two detectors, and two auxiliary) Maximum operating temperatures for auxiliary zones: 400° C Column oven Operating temperature: 4° C above ambient to 450° C Temperature setpoint resolution: 1° C Maximum run time: 999.99 min Programming ramps/plateaus: 6/7 Inlets All inlets include septum purge. Split/splitless: electronic flow, 400° C max, electronic entry of pressure or flow and split ratio version. Pressure setting range: 0-100 psi Total flow setting range: split/splitless, 0-200 ml/min N2, 0-1000 ml/min H2 or He Detectors: All detectors include electronic on/off of all detector gases. FID 450° C maximum operating temperature Automatic flame ignition from the keypad or ChemStation Flame out detection MDL: <5 pg carbon/s as propane using N2 carrier and 0.2794-mm jet Linear dynamic range: < 10%, 107 with N2 carrier and 0.2794-mm jet NPD 400° C maximum operating temperature Automatic baseline adjusting via keypad or ChemStation MDL: <0.4 pg N/s, <0.2 pg P/s with azobenzene/malathion mixture Selectivity: 35000 to 1 gN/gC, 75000 to 1 gP/gC with azobenzene/malathion/ octadecane Dynamic range: >105 N >105 P with azobenzene/malathion mixture TCD 400° C maximum operating temperature Single filament with microcell MDL: <400 pg propane/ml He caxrier (MDL may be affected by laboratory environment.) Linear dynamic range: 105 (5%) ECD Equipped with anode purge for contamination resistance 400° C maximum operating temperature Makeup gas types: argon (5%)/methane, nitrogen Radioactive source: 15 mCi 63Ni plated MDL: <0.04 pg/s lindane Dynamic range: > 104 with lindane