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[Dakota_imp]

Here is a couple of pics of the acid we use for pontoons.

That looks like hydrofluoric acid listed on there. HF is, in my opinion, one of most if not the-most dangerous acids. We do have it in one of the labs but there is a calcium glutonate antidote available for accidental exposure. Often, the fingernail must be removed in cases of exposure to ensure the acid is removed or neutralized. This stuff will kill you.