The National Institute of Standards and Technology (NIST) is conducting market research to identify alternative sources for an inverted microscope system to support its Organ-on-a-Chip program. The system must be easy to use, maintain live cell culture conditions, and be compatible with existing Zeiss microscopes, supporting brightfield, widefield fluorescence, and phase contrast imaging with high automation for continuous monitoring over days. No submission timeline or budget amount is specified in this notice. The location for performance of services is not mentioned. This is a market research notice only, not a solicitation, and NIST will determine its acquisition strategy based on responses.