CHICAGO — Steril-Aire’s booth is highlighting the Steril-Zone, a room air purifier that combines three technologies — a 95 percent efficiency particulate air filter at 0.3 micron, a patented extended life activated carbon filter, and a patented germicidal UVC emitter — to clean the air in rooms up to 1,000 square feet. Here a Steril-Aire representative discusses the product with a show attendee.