Drive Medical, ETCO2 Nasal Sampling Cannula with O2 Delivery Continuous Flow Oxymizer Adult Mustache Style Nasal P, Count of 24Product Description The Oxymizer is the simplest conserving device available today, operating without electronics, batteries, switches or flow controls Reduces oxygen costs by up to 75% Reduces the frequency of refills needed for both gaseous cylinders and liquid oxygen reservoirs Compatible with a wide variety of oxygen sources, including compressed gas, concentrators and liquid oxygen Mustache model can be used with pursed lip breathing at flows