This is a Request for Information (RFI) to identify sources capable of supplying TSI Q-TRAK XP Indoor Air Quality Monitors for the Defense Health Agency. The required equipment must measure particulate matter, temperature, humidity, barometric pressure, and up to six gases simultaneously, with data logging and field calibration capabilities. Performance of services is at the Naval Medical Center Portsmouth in Virginia. Responses are due by 5 pm EST on June 11, 2026. No budget information was specified.