Finnigan MAT 4000 Supplies and Repair Services


The Finnigan 4000 is a quadrupole GC/MS released circa ~1976.

SIS has supplied parts and services for the Finnigan 4000.

See also Cross Ref.

  • Baffle RepairBaffle Repair
    Repair the baffle by rewelding the probe shaft to the metal yoke.
  • CollectorsCollectors
    These new S.I.S. manufactured collectors are exact retrofits for the Finnigan 4000 collector.
  • Filament PostsFilament Posts
    These filament posts are the same composition as the original posts on the Finnigan 4000 filaments.
  • Heater Cartridge, SourceHeater Cartridge, Source
    This 24 volt, 50 watt heater cartridge is 1.5 inch long and has a diameter of 1/4 inch.
  • Lens HeaterLens Heater
    Thermo/Finnigan's lens heater (#40004-60300) and S.I.S. manufactured heater (FFL-2CC) can both be repaired
  • Platinum Resistance ThermometerPlatinum Resistance Thermometer
    This platinum resistance thermometer for the Thermo 4000 replaces Thermo #00007-89210.
  • Elbow Assembly RepairElbow Assembly Repair
    The GLT line and stainless steel capillary tube on the Finnigan 4000 and 4500 can be replaced if the lines become damaged or clogged.
  • Source Plate RepairSource Plate Repair
    Our repair includes replacing the posts and ceramic insulators and welding the posts back onto the plate.