Homebrew PCBs

On 22/03/2010 18:35, Mark Lerman wrote:
> As I understand it, the H2O2 is used to provide oxygen to the HCl,
> but using 3% peroxide slows it down because of dilution of the
> HCl.  Has anyone tried just bubbling some oxygen through the HCl? Or
> is this just too dangerous to contemplate?? Thought I'd ask before
> trying.<smile>

It's not all that dangerous, but you won't get much, if any, 
oxidisation. H2O2 is needed.

Leon
-- 
Leon Heller
G1HSM