Sharn/Marketlab Capnoxygen EtCO2/O2 Sampling MaskSharn Marketlab Capnoxygen EtCO2 O2 Sampling Mask The Capnoxygen Mask is a consistent means to monitor breathing of a non intubated patient, allowing sampling of exhaled carbon dioxide from both the mouth and nose while at the same time administering oxygen. It is made from Clear Medical Grade Resin. The mask is soft and allows form fitting comfort for the face. The tubing is non kinkable (star lumen). The design makes it simple and fast to hook up to