I work in a pawn shop, where we use nitric acid to determine whether
something is gold or not. It’s in a little glass acid jar with a lid
and a stick. Recently it has turned a lovely turquoise blue color.
Why is this? I figured maybe someone dropped a bit of metal in it or
something. Does anyone know if the color change will affect its
usefulness? I don’t want to neutralize it and throw it away if it’s
only a cosmetic problem.
Please respond off-line, I have rarely had the luxury of enough time
to read the whole list daily recently!
Thanks a lot, y’all!
Willandjulianewton AT hotmail.com