The most comparable portable oxygen concentrator to a stationary oxygen concentrator is a continuous flow portable oxygen concentrator. There are currently only four types of continuous flow units available on the market. These portable units are able to produce up to 3 liters per minute of oxygen delivered continuously.
Continuous flow units are a more suitable option for the majority of oxygen dependent patients than pulse dose, or intermittent flow, portable oxygen machines which we will discuss below. Because they are able to deliver up to the equivalent of 3,000 mL of oxygen per minute, this type of unit can handle a wider range of oxygen demands than a pulse dose model. As a general rule of thumb, if you require anywhere from 2 to 5 liters per minute of oxygen, a continuous flow portable oxygen concentrator is probably the best choice for you.