The 1900 Series UV germicidal lamp is designed to kill bacteria, fungi, and molds that grow on coils and drip pans. Two models are available: the 1910 single-base unit and the 1930 dual-base unit. The 18-in. lamp emits UVC light rays that penetrate, sterilizes, and, with prolonged exposure, kill all microorganisms that come in contact with it, according to the manufacturer.