GE F25T8/XL/SP30/ECO (2 Pack) 25 Watt T8 Fluorescent Tube Light Bulb 25W 3000 Kelvin - coated with Lumativ, a patented, photocatalytic coating that uses a light activated Photocatalytic process and Nanotechnology that breaks down volatile organic compounds (VOCs) and odors. LumActiv generates a superhydrophilic, self-cleaning surface. LumActiv combines photocatalytic TiOâ and advances in nanotechnology to create the most advanced light-activated functional surface coating on the market.