The Department of Commerce, specifically the National Institute of Standards and Technology (NIST), is seeking maintenance services for the Waters NIST Synapt XS with I-Class and APGC mass spectrometers. The procurement aims to establish a maintenance agreement to ensure the operational integrity of these critical instruments, which are essential for the laboratory's research in chemical, biological, and material sciences. The Waters Corporation is identified as the sole source for these services due to their exclusive training, certification, and access to proprietary parts and diagnostic tools necessary for servicing their equipment. Interested parties are invited to submit responses by 1:00 AM EST on June 13, 2025, to Erik Frycklund at erik.frycklund@nist.gov, with the NAICS code for this requirement being 811210 and a small business size standard of $34 million.