ONLY ONE! Flow-Safe II®+ is the first and only Disposable BiLevel & CPAP System in ONE! This disposable BiLevel CPAP system includes a deluxe full-face mask and manometer for verifying CPAP and BiLevel pressures. Flow-Safe II+ is ideal for transport and is easy to set-up – just attach the oxygen tubing to an oxygen source. Mercury also features the Only One naso-flo® NPA device designed with an O2 port and capnography adapter option. CarboTrack™ is the latest Only One single use universal EtCO2 adapter for side stream capnography with oral airways and other available equipment during moderate to deep sedation procedures.