What Is An Oxygen Concentrator? An oxygen concentrator machine is used to convert air into high-concentration level oxygen. It is primarily used to compensate for the oxygen deficit experienced by people who have trouble breathing or have difficulty taking in oxygen on their own. Oxygen concentrators are preferred over compressed oxygen in steel tanks not only because they are more convenient to use and less expensive, but also for safety reasons. How to choose an oxygen concentrator machine : 1. Before purchasing an oxygen concentrator, consult with healthcare providers who are familiar with your requirements. 2. Suppliers and manufacturers can give you relevant technical information. You can also ask somebody who is on oxygen therapy or he/she may be using a machine similar to what you are looking for. 3. The notion that expensive is better is not always true. Some machines cost considerably more because they include accessories that you may or may not need...