Typically all tanning
lamps fall into the "blacklight" catagory of flourescent tubes.
Litetech(LSI Hungary) Has made the Powertwist lamp in Europe. Rumor was that Ergoline could possible use it. I haven't heard anything in months. Maybe Light Sources Inc. will have it on show in Vegas.
If it does come out, look for a high price tag. The process of making them is pretty complicated. I think that there is only 3 places in the world that can do it.