Description

The QTX 400W UV black light bulb is a high-pressure mercury vapour lamp with an E40 Edison screw fitting, designed to produce ultraviolet light at a peak wavelength of 365nm. At 400W output on 230V mains, the bulb delivers sufficient UV intensity to cover medium to large stage areas, club dancefloors and event spaces where fluorescent materials, paints, fabrics and stage props need to be made visible under black light.

The bulb requires an E40 mogul-base lampholder and a compatible ballast to regulate current and voltage during operation. Once warmed up (typically 3-5 minutes), the 365nm UV output causes fluorescent and phosphorescent materials to glow brightly while rendering non-UV-reactive surfaces nearly invisible in a darkened environment. This effect is widely used in nightclubs, theatrical productions, haunted attractions, and themed events where visual drama depends on selective illumination.

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