Question: what is the difference of partial rebreather mask and non rebreather mask?
Answer: Partial rebreather vs. non-rebreather. A non-rebreather mask can deliver between 60 percent to 80 percent oxygen at a flow rate of about 10 to 15 liters/minute (L/min). ... A partial rebreather mask looks similar to a non-rebreather mask but contains a two-way valve between the mask and reservoir bag.