PHI, or Photohydroionization is an advanced oxidation technology developed by RGF to minimize and neutralize air indoor pollutants such as bacteria, viruses, mold, gasses, VOCs and odors. PHI utilizes a broad-spectrum high-intensity UV light targeted on a hydrated quad-metallic catalyst surface. This target surface is covered with a proprietary quad-metallic and hydrophilic coating. The UV-light reacts with the catalyst and moisture to produce an advanced oxidation plasma consisting of hydro-peroxides, super-oxides ions and hydroxide ions. These friendly oxidizers will revert back to hydrogen and oxygen once they come in contact with and eliminate the pollutant.