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75 watt Blacklight bulb BL-75 and 100 watt bulb for use with standard fixtures. A black-light bulb will work only in dark room environments and will cause day-glow fluorescent material to glow. These bulbs are used in Discos when they turn the lights off. It is not intended to light up a room BLUE and is not used in and of itself to emit visible light because the light is in the Ultraviolet Spectrum/Ultraviolet light(UV-A).
The Fine Print
This item is sold through the Groupon Store Halloween Wholesalers, operated by Halloween Wholesalers.
The merchant is solely responsible to purchasers for the fulfillment, delivery, care, quality, and pricing information of the advertised goods and services.