This product is an Ushio 5000071 MHL-121HT medium pressure metal halide lamp. It uses 3000 watts and has a Metal 14.3mm base. The spectral range of this lamp is 400-450nm.
Ushio MHL series metal halide lamps contain mercury, scandium and various other metal halogens in an inner bulb that produces a very high light output. As the high temperature of the arc discharge excites the halogenides to evaporate and separate into atoms, the metallic atoms illuminate and release the predetermined target ultraviolet wavelength. The mercury line of 365 nanometers remains present, and although depressed in strength, the combination of these halogenides effect the required ultraviolet wavelengths required for photopolymer, multi-spectrum and diazo processing applications.
Medium pressure, metal-halide lamps used in a variety of industries including ultraviolet UV curing, printed circuit board and photolithography exposure, and industrial graphic arts processing applications.