An oxygen concentrator is a device that is used for the purposeof providing a patient with oxygen therapy. They are a less costlyand safer alternative used in place of compressed oxygen tanks. Inindustrial processes, an oxygen concentrator may also be used toprovide a source of oxygen that is more economical.Even the most basic oxygen concentrator is able to deliver acontinuous flow of oxygen at a rate of up to five liters perminute. Oxygen level concentrations range from anywhere between 50and 90 percent. In recent years, patients who need a higher flow ofoxygen have been able to obtain concentrators that can provide asmuch as 10 liters of oxygen per minute in sizes that are not muchbigger than the smaller 5 liter per minute concentrators.The need for a portable oxygen concentrator has in