... air is passed through intense ultraviolet light in the photo-catalytic chamber, bacteria, viruses and most organic compounds are ... an Mini-HEPA Filter3rd stage consists of 2 Photocatalytic Filters (Titanium Dioxide (TiO2)4th stage comprises a UV ... Cabins, Auto, Bedroom, Living room, Cookroom, Hospital, Etc..·Filters: Cotton filtering effect early, HEPA Filter, Activated Carbon and Photocatalytic ...