Gas And Plumbing Requirements; Table 1-7. Capillary And Wide-Bore Column Gas Recommendations; Table 1-8. Packed Column Gas Recommendations - Thermo Scientific FOCUS GC Site Preparation And Installation Manual

Chapter 1
Laboratory Preparation

Gas and Plumbing Requirements

You must provide the gas supplies for your gas chromatograph. Be sure to order
your gases and regulators far enough ahead of time to have them ready for the GC
installation process.
WARNING! All Thermo Fisher Scientific gas chromatographs are designed to use an inert gas
as the carrier gas. If you wish to use hydrogen as a carrier gas, you must install a
hydrogen sensor. Contact a Thermo Fisher Scientific sales representative if you
plan to use hydrogen as the carrier gas in your new FOCUS GC. If you don't have the
hydrogen sensor, you must use an inert carrier gas.
Table 1-7 lists the gas recommendations for capillary columns.
Table 1-8 lists the gas recommendations for packed columns.
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Table 1-7. Capillary and Wide-Bore Column Gas Recommendations

Detector Type Carrier Gases
FID Helium
Nitrogen
Hydrogen
TCD Helium
Nitrogen
Hydrogen
Argon

Table 1-8. Packed Column Gas Recommendations

Detector Type Carrier Gases
TCD Helium
Nitrogen
Hydrogen
Argon

Gas and Plumbing Requirements

Fuel Gases
Hydrogen + Air Helium
Nitrogen
None Same as carrier
Fuel Gases
None Not Required
Site Preparation and Installation Manual
Make-Up Gas
Make-Up Gas