Columns and Oven 4
Advanced User Guide 61
Nickel Catalyst Tube
About the nickel catalyst tube
The Nickel Catalyst Tube accessory, G4337A, is used for trace
analysis of CO and CO
2
with a flame ionization detector. The gas
sample is separated on the column and passed over a heated
catalyst in the presence of hydrogen, which converts the CO and
CO
2
peaks to CH
4
.
Nickel catalyst gas flows
For a standard FID installation:
Carrier gas
Sample Hydrogen Air
Gas sample valve
Column Nickel catalyst
FID
Table 9 Gas flows for a standard FID
Gas Flow rate, mL/min
Carrier (helium) 30
FID hydrogen 30 (see Caution)
FID air 400
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