The National Institutes of Health intends to make a sole source award to MEI Research of Edina, MN, for Whole Room Calorimeter Validation and Support services for metabolic chambers in Phoenix. The required services are highly specialized, relying on MEI's proprietary software and technical expertise specific to the existing systems. The period of performance is 12 months after award. This is a firm-fixed price purchase order conducted using Simplified Acquisition Procedures. While not a request for competitive proposals, interested parties may identify their capability to respond.