Scientific Instrument Services carries a wide selection of parts for all models of Thermo/Finnigan mass spectrometers. In order to aid you in the selection of replacement parts for your instrument, the following part number cross reference chart can be used. If a part number is not listed, it either means we do not have that part in our inventory or perhaps we are not aware of the Thermo part number in relation to our inventory. If you are looking for a part not listed below, use our Search Syst...