CALL FOR PRICING! Titan 4000 Hydroxyl Generator. Item No. 400340. The 365nm to 385nm UVA Rays emitted from Titan’s TiO² Photocatalytic Lamps pass through a Permanent Anatase TiO² Coated Super Reactor Screen which is designed to hold the maximum amount of Highly Reactive Nano Sized Anatase Titanium Dioxide, as a result, electron hole pairs are formed that react with H²O and O² in the air and produce Free Electrons and Hydroxyl Radicals that when dispersed by the fan will decompose organic and inorganic gases and air pollutants into carbon dioxide and water.