The Q-SUN testers’ xenon arc lamps produce the most realistic reproduction of full spectrum sunlight, including ultraviolet, visible light and infrared radiation. For many materials, exposure to the full spectrum is necessary to provide an accurate simulation, especially when testing for color change and lightfastness. Q-SUN xenon arc test chambers use air-cooled xenon arc lamps to significantly reduce operating and maintenance expenses. Lamp life is guaranteed at 1500 hours. Q-SUN models Xe-1 and Xe-2 use one lamp and model Xe-3 uses three