"Herbert E. Plett" <
cachureos@...> writes:
> perhaps a little more HCl is needed, it also fumes out...
Follow-up:
CuCl concentration is below 1.2 (which I figured).
Acid seems high enough. I heated some copper wire to get Copper
Oxides, and the etchant dissolved that just fine, leaving a bright
pinkish copper behind. I did that a few times to get more copper into
the tank, and then left the wire in there. Perhaps by the time I get
around to fiddling with it again it will be more usable, otherwise
I'll put in more H2O2.
I did make up some NaOH solution for titration but it neeeds time to
fully dissolve.