(TrendHunter.com) The AIR6Plus portable air purifier uses photocatalytic oxidation, a state-of-the-art patented 3D PCO multiplier air filtration technology. This same filtration system can be found on the... (TrendHunter.com) The AIR6Plus portable air purifier uses photocatalytic oxidation, a state-of-the-art patented 3D PCO multiplier air filtration technology. This same filtration system can be found on the...