A dual flow oxygen concentrator is an electrically powered medical machine that takes in room air and concentrates the oxygen, delivering it at a high flow rate (up to 10 liters per minute, LPM) at medical‐grade purity (typically ~90‐93% ±3%).
It gets its name from its dual outlets, meaning it can:
Serve two patients simultaneously (two separate flow meters) or
Deliver a higher total flow to one patient if only one outlet is used.