On Tue, 18 Apr 2006 02:03:30 +0200, Herbert E. Plett <cachureos@...> wrote: > It appears as though > >> the copper oxide (whatever the black stuff is) can be a repiratory > >> irritant of some sort. > > ... > > > the way to remove the oxide is with muriatic acid (HCl)... > Or sand under water if you must. ST
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Re: [Homebrew_PCBs] Copper oxides - respiratory problems?
2006-04-18 by Stefan Trethan