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Portable Oxygen Cylinders
Portable oxygen cylinders are among the older supplemental oxygen delivery systems. The process is simple. Compressed purified oxygen is packed by oxygen generators into aluminum cylinders. You'll have a lot of choices for cylinder sizes based on your need. Those needing less oxygen can do using the easily transportable 4 pound cylinder. If you want extra oxygen you can get the 8.5 pound size from oxygen generator.
Portable oxygen cylinders are simple to refill and obviously the less oxygen you need to use, the longer the cylinder will last. Other portable oxygen generators though usually will last longer than a cylinder.
Portable Oxygen Liquid Tanks
When gaseous oxygen is compressed to low temperatures, it turns to liquid. Portable oxygen tanks make use of this liquid oxygen. This liquid type of oxygen allows for storing more of it than can be stored in a concentrator.
When the patient needs oxygen, the liquid inside the tank is transformed into a gas and then delivered. Small units that can deliver the oxygen for many hours can be found that help to accomplish this.