> Does anyone know of any sources for cheap tubes as I have described?
> Does anyone have any ideas for making their own? If I was to make one
> from PVC or acrylic tube (it doesn't have to be light tight), what sort of
> adhesives would stand up to the chemistry? A 5" diameter tube would be
> large enough to hold a 16x20 sheet of paper.
How about the big black plastic circumferentially-ribbed screw-cap food
storage jars used by canoeists? The ones sold here are made by BDH for
chemical storage - all canoeing shops have them, complete with embossed
"Hazardous Chemicals" lettering. They come in a range of sizes. No idea
how light-tight they are, though (this shouldn't matter a lot, should it?)