Welcome at Glow Specialist
This 400 watt UV lamp with E-40 socket can be used in our 400 watt floodlight or gun. Don't touch this lamp during replacement, this will shorten its life.
We recommend not to use the bulb without appropriate fixture because of the heat of the lamp. Can only be used with ballast resistor.
Blacklights make UV reactive products glow brighly. You may be familiar with the white T-shirts that light up blue!