Just don't go overboard, like I did. The last itme I was at b&h I brougt back a gallon of glacial acetic acid.
Fortunately I was driving my own car, so there were no big accusations at crossing back into Canada about what terrorist act I might have been planning what that in that jug. I figured that I was not likely to be around again with space in the trunk, and it was only 5x what I pay locally for indicator stop bath, when I use it.
The other plus is I will never need to run out to buy vinegar when making pickles in the fall for many years either.
If you want real paperwork fun, try buying bulk sodium hydroxide. Another hobby is soap making, and red devil lye is getting hard to find, and rather pricy in comparison. For the csot of 17 batches of soap using a can of red devil lye I now have a much larger bag (actually it is now in two well sealed plastic pails, that will make 93 batches worth of soap. I bought this locally. I thought if I tried to drive that across the border the DEA would have the RCMP turning my darkroom and the rest of my basement upside down looking for the clandestine drug lab that does not exist.
