The 701 portable blacklight is a four foot flourescent lighting device which produces a wash of near ultraviolet light for effect. Ultraviolet light waves cause white reflective and specially treated surfaces to flouresce while dark or adsorptive surfaces become invisible. The lamp contains an integral filter to eliminate any harmful far ultraviolet while maximizing the near ultraviolet effect. Effective distance for the 701 is 4 to 10 feet from the subject.Common usage is to line the stage front with a number of luminaires to act as ultraviolet footlights. The 701 is constructed of 18 guage steel with an integral ballast, reflector, line cord, and hinged latching cover with carrying handles.The finish is black baked enamel. The fixture is UL listed at 40 watts.