Great Value CFL Light Bulb, 14 Watt Spiral Lamp E26 Medium Base, Non-Dimmable, Black

from Jeff

Yes you can use this to light up posters and as a party bulb but the bulb color is visible blue (not black) so its a blue bulb that produces some UV. No its not enough UV to be a germicidal lamp but it isnt advertised as such. Its an OK product if you arent expecting much for four bucks, and its...

from russianbill

Too much visible light to be useful as a Black Light. A true Black Light is 365 nanometers which is barely visible to the human eye, this one is closer to 400's and little more than a purple bulb that puts off some UV. Also the life of this bulb is very short. I agree with previous poster tha...

from WhoeverIam

This bulb lasted MAYBE 7 hours...MAYBE. Tried to use it for Halloween but burnt out the first use.

from al72vette

These bulbs are terrible. The box claims 10,000 hours of of life and it died before the party was over during the first use. Only lasted about 5 hours. Waste of money!

from Rich

I've looked in a number of places for a good blacklight. I've tried the regular blacklight bulbs that look like a regular light bulb and they provide minimal UV light so they don't work well if you're looking for the blacklight effect on white colored and neon colored things for blacklight partie...