The National Institute of Standards and Technology (NIST) is seeking information from vendors capable of providing a UV-Vis Spectrometer System as part of a Sources Sought Notice (NIST-MML-25-SS22). The system must meet specific performance requirements, including a wavelength range of 185 nm to 1800 nm, multiple lamp sources, and advanced features for in situ catalysis research, such as N2 purging and temperature resistance up to 800 °C. This procurement is crucial for supporting NIST's analytical capabilities and facilitating advanced research in analytical laboratory instrumentation. Interested vendors are encouraged to submit their capabilities and relevant information to Harry L. Brubaker at Harry.Brubaker@nist.gov by the specified response date, with a formal Request for Quotation anticipated in late 2025.