Heat Moisture Exchanger Filter (HMEF, Contra Angle) Introduction Heat and Moisture Exchanger Filter (HMEF, Contra Angle) combines the efficiency of dedicated breathing filters with optimum moisture return. Features: Low dead space, to minimize dangers associated with re-breathing carbon dioxide. Lightweight, to reduce additional heavy on the tracheal connection. Maximizes the humidity of inspired gases. ISO, CE&FDA 510K Heat Moisture Exchanger Filter (HMEF, Contra Angle,Adult) Humidity Output Dead space Tidal Volume Range Gas Monitoring Luer Port with retainer strap Heat Moisture Exchanger Filter (HMEF, Contra Angle) REF Carton size Shelf Life