We have all seen people carrying portable oxygen tanks or concentrators to provide critical life support respiratory oxygen. Heavy, bulky, and for O2 concentrators, noisy, there clearly is an opportunity to improve the delivery of oxygen to the millions of users requiring oxygen therapy. This program affords us an opportunity to develop and demonstrate a noiseless, portable medical oxygen concentrator that can serve a large terrestrial market as well as future NASA exploration missions that need emergency oxygen for various medical scenarios. This product aims to improve the three largest user complaints with existing portable O2 concentrators, namely, that the systems are too heavy, too noisy, and they are too bulky restricting mobility. Reactive's medical oxygen concentrator will provide improved mobility for people that require O2 respiratory therapy enhancing the quality of their life.