The Advanced Pure Air™ Newport 9000 UV light is highly effective in helping fight biological based diseases caused by viruses, bacteria and molds. This micro-organism fighting technology is recommended by numerous government and private agencies including the Centers of Disease Control, the Air Institute of Respiratory Education and the Air & Waste Management Association. It is also commonly used in many health care facilities to sterilize both the air and medical equipment. Ultraviolet (UV) light, in the right concentration and in the correct wave lengths, can kill many harmful micro-organisms. Some biologicals are too small to be removed by HEPA filters. Advanced Pure Air uses a shielded UV lamp operating at the 254 nano-meter wavelength to irradiate the airflow passing through our Air Purifiers. The 254nm Ultraviolet light possesses just the right amount of energy to break organic molecular bonds of the micro-organisms in the air stream. This bond breakage translates into cellular or genetic damage to these microorganisms, such as germs, viruses, bacteria, fungi (like molds), etc. This results in the destruction of these microorganisms. It is important to note that the Advanced Pure Air air purifiers shield direct ultraviolet light from escaping from the inside of the unit, exposing direct UV light only to the air that passes through the air purifier making them safe to use anywhere in your home or office.