Portex heat and moisture exchangers provide effective humidification for spontaneously breathing users whose upper airways are bypassed by a tracheostomy tube. 

• Can be used for a maximum period of 24 hours
• Simple opening port allows quick and easy access for a suction catheter to aid in the removal of secretions
• Clear housing gives an aesthetically pleasing appearance and allows visualization of contamination
• Integrated oxygen port can provide up to 60 percent oxygen concentrations to the user via the simplest of connections
• Smooth, rounded edges for comfort
• Humidity output: 31 mg H2O/L at 500 Vt
• Tidal volume: 150-500 mL
• Dead space: 53 mL