The National Institute of Standards and Technology (NIST) is seeking information from industry sources to assess the availability of a temperature-controlled water bath for microcalorimeters, to be used for RF power calibrations at its Boulder, CO site. Responses are due by July 16, 2026, and must be submitted electronically to the specified contact. No budget amount is specified in the notice. The anticipated delivery period is 90 days after receipt of order. This is a market research request only, not a solicitation, and does not obligate NIST to award a contract.