Photocatalytic oxidation (PCO) air purification technology is proven to be extremely effective. PCO technology can eliminate harmful molecules not removed from the air by hospital grade HEPA filters. PCO systems destroy, rather than trap harmful airborne substances. This is a particularly important point regarding airborne microorganisms. Airborne infectious agents can remain a threat if they are trapped on a filter that must be disposed of by hand. The Photox™ technology utilizes a proprietary photosensitive catalyst that adsorbs organic substances onto its surface where they are oxidized and destroyed within the purification device.