The Indian Health Service is seeking capable Indian-owned economic enterprises (IEE or ISBEE) to provide a commercial quantitative respirator fit testing system, including software, accessories, and a manufacturer-authorized maintenance and calibration agreement. The system must support fit testing for N95, half-mask, full-face, and SCBA respirators with electronic record management. Responses are due by July 17, 2026, and must be submitted via email to the specified contact. No budget information is provided, and the location for performance is the Crownpoint Healthcare Facility Service Unit. This is a sources-sought notice for market research only, not a solicitation.