Omnilux 125 watt blacklight blue high pressure mercury vapor light bulb

This lamp is blacklight blue and it gives out a beautiful ultraviolet output at 125 watts.

[@Sparky-ww5re]

I have the 400 watt version. BT37, E40 base but works fine in an E39 socket with pulse start metal halide ballast with ignitor disconnected. Puts off an insane amount of UV and gets incredibly hot. Basically any mercury vapor lamp can be made as a blacklight by using a woods glass envelope instead of a clear or phosphor coated glass, although they are only made in a few wattages, 125, 250 and 400 are the only sizes I could find online dispite extensive research. Were commonly used in nightclubs and similar large venues and bowling alleys before LED blacklights were available, and gradually replaced the mercury vapor since they add many advanced capabilities such as dimming, stroking, DMX control, and more. Still, the nature of mercury vapor makes for an efficient blacklight source.

[@mernokimuvek]

The scre base was invented by William Sawyer and Albon Man in 1878. edison was a thief.