The Department of Commerce, specifically the National Institute of Standards and Technology (NIST), intends to negotiate a sole source contract for the repair of a Spectro Analytical Instruments Inc. ARCOS ICP-OES instrument. This procurement is essential for the Chemical Sciences Division, which relies on the instrument for research and development as well as the certification of reference materials, thereby supporting national needs in chemical measurement and analysis. Spectro Analytical Instruments Inc. is the only authorized vendor for servicing this equipment, as they do not have any authorized repair partners within the continental United States. Interested parties may contact Erik Frycklund at erik.frycklund@nist.gov or Donald Graham at Donald.Graham@nist.gov for further inquiries, with responses due by September 19, 2024.