I use 3% (drug store strength). Start with two parts of that, add one
part 37% HCl. You don't need the stronger stuff.
part 37% HCl. You don't need the stronger stuff.
Message
Re: [Homebrew_PCBs] Hydrogen peroxide mixing
2011-03-06 by DJ Delorie
Yahoo Groups archive
Message
2011-03-06 by DJ Delorie