... operation 3.exactly match with gas chromatograph Product Name :Oxygen Removal TubeGasN2 H2 C2H4 Ar He workchemical reaction temperature range ... .5color variation from greet to brown Application:It is used for hydrogen or hydrogen gas catalytic deoxidization.It is ... chromatographic spectra, energy, such as carrier gas purification, used in the chemical, electronic, metallurgy, medicine and food, ...