Mass-spectrometer interface housing

An apparatus for performing chemical analyses, the apparatus comprising:

• a mass spectrometry module;
• and
• an interface module in communication with an input of the mass spectrometry module to deliver material comprising a sample to the mass spectrometry module, the interface module comprising
• a vessel defining a chamber and an opening to access components disposed in the chamber,
• a door to block the opening if the door is in a closed position and provide access to the chamber if the door is in an opened position,
• a sealing member for disposal substantially between the door and the vessel to seal the vessel if the door is in the closed position, and
• an interlock unit that is actuated by the sealing member if the door is in the closed position and the sealing member is properly disposed adjacent to the door.