The mixture rule states that any mixture of a listed hazardous waste and a non-hazardous waste remains regulated as a hazardous waste. Mixtures of characteristic wastes and non-hazardous waste are regulated as hazardous waste if the resultant mixture continues to exhibit the characteristic.
1 Wash the cannula in soapy water and rinse it with a solution of 10 parts water and one part vinegar. 2  Rinse thoroughly with hot water and hang to dry.  This connects the nasal cannula to the oxygen concentrator. It doesnât need to be cleaned, but plan to replace it every 6 to 12 months advises the ATS.
With a non-rebreather mask, you should be using O2 flows >10LPM, and more like 15 LPM. The NRB requires higher flow rates because when the patient inhales, the reservoir bag deflates, and at lower flow rates, the bag will completely deflate and cut off supplemental O2 flow. Those masks aren't completely sealed, so the patient will continue to breathe room air once the reservoir bag is empty.