The U.S. Geological Survey (USGS) is planning to award a non-competitive purchase order for one year of maintenance services for a mass spectrometer located at the USGS Radiogenic Isotopes Laboratory in Reston, Virginia. The maintenance will be provided by Spectromat Massenspektrometer GMBH, the sole manufacturer of the equipment, which holds proprietary rights to all necessary software and components, making them the only reasonable source for this requirement. This procurement is critical for ensuring the operational integrity of the mass spectrometer, which is essential for various geological analyses. Interested parties may submit quotations for consideration, although the award is intended to be made non-competitively, with an anticipated award date of April 4, 2025. For further inquiries, contact Daniel Galvin at dgalvin@usgs.gov or by phone at 703-648-7397.