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Thermo Fisher Scientific

Exhaust System


What factors shoud be considered for determining the appropriate exhaust system for the Q Exactive GC?


Q Exactive GC


Exhaust System
  • Supply a 1-in. i.d. hose to the building exhaust air system, an oil mist filter, or other scrubbing device.
  • The pump exhaust contains carrier gas, solvents, analytes, and a small amount of oil vapor.
  • These materials may be flammable, poisonous, or corrosive.
  • Do not allow the exhaust from the foreline pump, which includes your analytes, to accumulate to unsafe levels in your laboratory.
  • Consult your local Environmental and Safety Regulations for information about how to properly exhaust fumes from your laboratory.

Most of the nitrogen that is introduced into the Q Exactive GC escapes into the laboratory atmosphere. Therefore, provide for good air exchange to prevent accumulation of gaseous nitrogen in the laboratory.

Additional Information
  • An efficient fume exhaust system is required for the proper operation of your forepump.
  • The frequency of the purging is dependent on the throughput of your system.
  • Do not route exhaust tubing from the pump vertically toward the ceiling.
  • To maintain pump integrity, route the tubing from the exhaust port down to the floor.
  • The exhaust hose should travel at floor level for a minimum of two meters (78.5 inches) before it reaches the external exhaust system.
  • This tubing acts as a trap for exhaust fumes that would otherwise recondense in the forepump oil.


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