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Subject: Re: [Homebrew_PCBs] Oxygen tablets for CuCl regeneration

From: Stefan Trethan <stefan_trethan@...>
Date: 2009-07-06

There are ways to increase efficiency using pure oxygen, google for
downstream reactor (also used for fish tanks).

I already tried using a piece of a chlorine tablet (from a pool) but
it did not work. Oxygen should.

ST

On Sun, Jul 5, 2009 at 11:12 PM, Ken Stuempges<ozarkshermit@...> wrote:
> Howdy
>
> I have this "hare-brained" idea on another method to regenerate Cuperic Chloride etchant.  I plan on getting some "Oxygen Tablets" (used in fish tanks, live bait tanks, etc), and placing one of the tablets in a closed container of water to generate oxygen.
> The container will be connected via a tube to my bubbler, rather than my air pump. As a result, pure oxygen will be bubbled, rather than air.  I'm guessing that it should be as fast a regenerator as Hydrogen Peroxide . . . and not any more expensive when compared to 30 or 40 volume Hydrogen Peroxide - plus the etchant will not be diluted.
> Any comments ? Has anyone tried this?  I'll post my results
>
> Ken