This is a Sources Sought Notice for market research to identify small businesses capable of providing a preventive maintenance and repair service agreement for a specific Thermo Scientific Orbitrap Exploris MS system. The service requirement is for a base year starting August 28, 2026, plus two option years. The work will be performed on-site at the National Center for Toxicological Research in Jefferson, Arkansas. Interested vendors, particularly small businesses under NAICS 811210, must submit a detailed capability statement by email to demonstrate their qualifications. No budget information is specified in this announcement.