Control of Air-Borne Microorganisms by Ultraviolet Floor Irradiation

Abstract

A 9X7X8 ft. metal covered room into which house dust was introduced was irradiated by 4 8-watt, low pressure Hg vapor glass lamps, 30 inches from the floor, with fans blowing the dust. Quantitation of bacteria in the air before, during and after radiation revealed that u.-v. floor radiation markedly lowered air-borne bacteria. This in practice may be combined with ceiling irradiation.