The Department of Commerce, specifically the National Institute of Standards and Technology (NIST), is seeking to establish a service agreement for the maintenance of a NIST-owned MAT 253 Mass Spectrometer, manufactured by Thermo Fisher Scientific. The procurement involves a comprehensive maintenance agreement that includes one preventive maintenance visit and one on-demand/on-site visit over a one-year base period, with the option to extend for two additional one-year periods. This specialized equipment is critical for various measurement and analysis applications, and the sole source determination is based on Thermo Fisher's proprietary rights and the necessity for certified technicians to ensure compatibility and performance standards. Interested parties may submit responses by September 11, 2024, and should direct inquiries to Carol A. Wood at carol.wood@nist.gov or by phone at 301-975-8172.