What is Oxygen concentrator?
[[File:Home oxygen concentrator.jpg|frameless|right]] An '''oxygen concentrator''' is a [[machine]] that takes in [[air]] and takes out some of the [[nitrogen]] (as N<sub>2</sub>) so there is more [[oxygen]] (as O<sub>2</sub>). This new air with more oxygen is then given to a patient during [[oxygen therapy]]. [[Category:Medical equipment]] [[Category:Oxygen]]