NASA's National Aeronautics and Space Administration (NASA) is seeking to procure one flow cytometer to detect and measure the physical and chemical characteristics of cell populations, with operational activities to be conducted at the Johnson Space Center in Houston, Texas. The flow cytometer must meet specific technical requirements, including four laser wavelengths and stringent performance metrics, to support NASA's research initiatives. This procurement is expected to be a sole source contract awarded to Beckman Coulter, Inc., as they are the exclusive provider of this equipment, although interested organizations are invited to submit their qualifications by 1 p.m. Central Time on March 11, 2025, for potential evaluation of competitive procurement. For inquiries, interested parties may contact Cara Craft at cara.s.craft@nasa.gov.