That's sure a nice ultraviolet flashlight (from the link you posted). I'd like to get one too. So that's a black light, or UV light? Are the tubes that go in hanging fixtures for work areas UV lights? if so, would they make the fibers glow? Just curious, I'm planning on getting the flashlight. I wish they all were sold with rechargable batteries, or better yet both options. My camera eats up batteries like crazy. Next one will use re-chargables.