The NIH is seeking a firm-fixed-price contract for commercial items through a competitive combined synopsis/solicitation, using full and open competition and best-value evaluation. This is a request for proposals under FAR Subpart 12.6, with no separate written solicitation to follow. The requirement is unrestricted, and the associated NAICS code is 334516 (Analytical Laboratory Instrument Manufacturing). No performance location, budget amounts, or submission timelines are specified in this notice.