The Russian Lomo spiral tank that I bought was referred to as UBP-1A. I got mine from Olexandr Kalynychenko, Ukraine, who used to operate a Russian Camera site. I can't find any of his sites anymore, so they may be gone. But the tanks are readily available on ebay. Just make sure you get the one that handles 1 16mm or 2 8mm 50 foot films.
I agree with siltec. The easiest way to load the tank is to first spool the film off the cartridge and onto a regular 50 foot reel. I built a little loading jig, patterned after others I saw on the net. I'd post a picture of it, but I don't remember how to do that.