The Department of Commerce, specifically the National Institute of Standards and Technology (NIST), is conducting a sources sought notice to identify potential sources for a pressure-based flow control system. This system is essential for high precision flow-based measurements in microscale measurement technology, aimed at detecting and classifying critical minerals in semiconductor manufacturing waste streams. The procurement is aligned with the CHIPS R&D Metrology Project and requires specific technical capabilities, including pressure control modules, flow sensors, microvalves, and compatible software for operation with Matlab and Python. Interested vendors should submit their responses, including company details and product specifications, to the primary contact, Nina Lin, at nina.lin@nist.gov, as soon as possible, with no solicitation currently available.