Tubular OMNILUX OQI discharge lamp with a 400 W nominal wattage, Fc2 base, 90 V operating voltage and blue light output. The lamp uses clear glass, requires an ignition device and provides good colour rendering, high light output and a rated life of 6,000 hours. Dimming is not permitted. When used with silicate glass covers and light-sensitive materials, an additional UV filter is required.