5 Exhaust Venting
Exhaust vent fittings
30 Site Preparation Guide
4 Vent the GC/MS system externally to the building via an ambient-pressure vent system,
within 460 cm (15 ft) of both the GC split vent and GC/MS foreline pump, or vent to a fume
hood.
Exhaust vent fittings
The various inlet and detector vents terminate in the following fittings:
• TCD, ECD: The detector exhaust terminates in a 1/8-inch od tube.
• SSL: The split vent terminates in a 1/8-inch Swagelok female fitting.
• All inlets: The septum purge vent terminates in 1/8-inch od tubing.
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