The National Institute of Standards and Technology (NIST) is conducting market research to identify vendors capable of supplying a Second Harmonic Generation Microscope. This is a sources sought notice, not a solicitation, and no contract will be awarded from this announcement. Responses must be submitted electronically to the Contract Specialist by the date and time specified in the notice. The government will use the results to determine if a small business set-aside is possible, and all responsible sources are encouraged to respond. The location for performance and a specific budget amount are not mentioned in this notice.