... xylene, TVOC,NMTHC)2. Natgas, Artificial Gas, Coal-Mine Gas, LPG, Mixed Gas, High Purity Gas (Ar,He,O2,N2,CO2)3. Food ... the phenomenon of mistake peaks.8. GC9310 gas chromatograph using a digital flow control valve knob adjustment, intuitive, and good reliability ... .9. GC9310 gas chromatograph injector with two options: ...