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Subject: Re: [Homebrew_PCBs] Re: Getting started with Cupric Chloride - I think...

From: DJ Delorie <dj@...>
Date: 2009-01-27

Wayne Topa <linuxone@...> writes:
> What was the volume of the the peroxide, the 3% drugstore type or
> the 30% Beauty Supply type? I was able the get the 30% and I think I

I use two parts 3% H2O2 to 1 part 37% HCl.