The latest product comparison study titled “Comparison of portable oxygen concentrators using a COPD patient simulation model” has found CAIRE’s premier portable oxygen concentrator – FreeStyle Comfort — outperformed other market leading devices, helping COPD and asthma patients. The study by a team of experts from the Department of Respiratory Therapy and Byrdine F. Lewis College of Nursing and Health Professions at Georgia State University, compared the oxygen output of eight competitive devices that currently comprise the majority of the portable oxygen therapy market, along with control group systems including a stationary oxygen concentrator and wall output oxygen similar to what a patient would receive in a clinical environment.