Non Rebreathing Mask: Direction For Use: 1, Attach the oxygen supply tubing to the gas source. 2,Set the oxygen to the desired flow. 3,Check for gas flow through the device. Always verify proper function of the valves: The valve between the mask and the reservoir should open during exhalation. Valves located on external mask su face with the elastic strap until the mask is secure. Mold the metal strip on the mask to fit the face. Caution 1,For single use. Discard after use. 2,Do not use if package is open or damaged. 3,Do not store at extreme temperature and humidity. Store in cool and dry place. 4,Ensure that all connections are secure and air circulates freely through the tubing.
