... , toluene, xylene, TVOC, NMTHC)Natgas, Artificial Gas, Coal-Mine Gas, LPG, Mixed Gas, High Purity Gas (Ar,He,O2,N2,CO2)Food Additives & ... , automatic rear door opening and pressure displaying functions.3.SEGC9310 gas chromatograph using a double stable pneumatic system, single ... , the column oven temperature can be programmable to five-stage heat up. It can also microcomputerized the FID amplifier ...