The Oxymizer® is the simplest conserving device available today, operating without electronics, batteries, switches or flow controls. Reduces oxygen costs by up to 75%. Allows you to obtain the equivalent of 7.5 liters from a 5-liter concentrator. Eliminates the need to deliver and service two concentrators for your high-flow patients. A close-coupled reservoir that fills with 20 mL of expired air at the initial phase of expiration, which is enriched or replaced with oxygen during the remainder of expiration. For use with all oxygen delivery systems.