Enjoying the info on that website immensely .. thanks ..
I was thinking about using an aquarium heater to heat the solution..
But I guess I would have to bypass the thermostat and control the temp
with something solid state and external as not to have any sparks near the
solution ..
and aerate the solution. Can I use one of those aquarium stones? or should
I fab it out of PVC ?
Looks like, according to the website, discarding the HCL / H2O2 solution wont
be necessary .. at least not for a long time .. :)
Thanks again all for the help ..
Learning much, having much fun .. :)
Randy - N2CUA
________________________________
From: Norm <
w6nim@...>
To:
Homebrew_PCBs@yahoogroups.comSent: Mon, February 28, 2011 1:32:03 PM
Subject: Re: [Homebrew_PCBs] Re: Question for the chemistry majors !!
On 2/28/2011 9:05 AM, Randy S. wrote:
>
>
> Where do I purchase 30% H2O2 ?
> I
>
Beauty shop/professional hairdresser suppliers carry it.
As to disposal, bubbling air through it, or adding a bit of HCl seem to
rejuvenate it - no need to dispose of it. Do a Google on copper
chloride etch - e.g.:
http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/
Norm
W6NIM
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