This is a Sources Sought Notice for a preventive maintenance and unlimited repair service contract for a Thermo Fisher Q Exactive mass spectrometer system, including its computer and software. The requirement is for a base year plus two one-year option periods. The instrument requires a pre-inspection and repairs to fix a failed pump before the new service contract begins, as a previous agreement expired. Once repaired, the contractor must maintain the entire system in a functional state. The performance location is not specified in the provided text.