Features 1 5.7-inch lcd display indicates temperature, time and gas flow.2 self-test, power protection, keyboard lock , automatic ignition and anti power mutation interference function.3 can connect with internet, realize data transfer and program upgrade automatically.4 equipped with a flame ionization detector (fid), and tcd, ecd, fpd, npd are optional. Can install four detectors at the same time.5 can install packed column and capillary column at the same time6 double column compensation function, which can effectively restrain baseline drift and the influence of background noise.7 large capacity oven (300*280*180mm) can hold 2 pcs 0.32mm diameter capillary column (length: 80m).8 better thermal insulation effect: when the temp. Of oven, vaporizing chamber and detector reach 300, the max. Temp. Of outer chamber is 40.10. With chromatography workstation software to process data.Modelbk-gc7820oventemp. Rangert450temp. Accuracy0.1temp. Program16-phasemax. Temp. Heating rate40mindetectorhydrogen flame ionization detector (fid)detection limit:310-12gs(sample: n-hexadecane)baseline drift:1x10-13a30minlinear range:107thermal conductivity detector (tcd) (optional)sensitivity: >10000mv.mlmg(sample: n-hexadecane)linear range:105electron capture detector (ecd) (optional)detection limit:110-14gml(sample: n-hexadecane-666)linear range:103flame photometric detector (fpd) (optional)detection limit:210-11gs (s of thiophene)detection limit:110-12gs (p of methyl parathion)linear range (s):102linear range (p):103nitrogen and phosphorus detector (npd) (optional)detection limit:110-12gs (azobenzene)detection limit:110-12gs (marla sulphur phosphorous)linear range:103power supplyac110220v10%, 5060hz