The NIH is seeking a firm-fixed-price contract for a Zeiss Axiovert 5 TL/FL microscope system with phase contrast, DIC, fluorescence (Colibri 3), accessories, and ZEN software. This is a full-and-open competitive acquisition, not set aside for small businesses, and is expected not to exceed $350,000. Award will be based on best value, with technical factors outweighing cost. Offerors must provide pricing, shipping, delivery timeframe, and product details in their quotes. No performance location is specified.