The Department of Commerce, specifically the National Institute of Standards and Technology (NIST), is conducting market research through a Sources Sought notice for a High Pressure Chilled Mirror hygrometer. The primary requirement is for a chilled-mirror hygrometer that can withstand pressures up to 7 MPa and has a reproducibility of 0.05 °C, aimed at enhancing measurement capabilities in industrial processes. This equipment is crucial for precise humidity measurement and control, which is vital in various scientific and industrial applications. Interested vendors must respond with detailed information about their products, including specifications and capabilities, by contacting Elizabeth Timberlake at elizabeth.timberlake@nist.gov, with responses encouraged before the closing date of May 21, 2025. This notice serves solely for market research and does not guarantee a contract award.