The APS-1000 Ionizing Air Purifier is a small and and portable solution that combines H13 True HEPA filter and a medical-grade air filter. The product removes 99.7 percent of harmful particles, microbes, formaldehyde and other gaseous pollutants to improve air quality and optimize living environments. It can purify large volumes of air, up to 850 cubic feet per hour, at four air changes per hour.