... Benzene, toluene, xylene, TVOC, NMTHC)Natgas, Artificial Gas, Coal-Mine Gas, LPG, Mixed Gas, High Purity Gas (Ar,He,O2,N2,CO2)Food Additives ... TCD and capillary injector can be used for wide temperature range and high precision temperature control, the column oven temperature can ... heat up. It can also microcomputerized the FID amplifier range and polarity selection, TCD current settings and display.5. ...