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Subject: Re: [Homebrew_PCBs] Shelf life of HCl/H2O2

From: Wayne Topa <linuxone@...>
Date: 2009-01-05

Stefan Trethan wrote:
> At first i was going to say you must be mistaken, but then i
> remembered a few years ago i actually kept this etchant in the
> described bottle. You have a better memory than myself it seems.
>
Actually I don't. In researching Leon's reply, which I mis-read, I went
back to try
to refresh my memory before I mixes the chemicals. I read a lot of
2006 posts and
thought it was you the used the double-cap bottle for storage.
> Now i just keep it in the etching tank, which is by now second
> generation already, made of 4mm glass with a phenolic board lid. The
> lid sits on a rubber surface, to form a bit of a seal (but it's not
> really airtight). To keep dust out (and maybe the fumes at bay a
> little) i use a large plastic container over the whole setup, as a
> lid. A similar container is underneath as a emergency catch basin so
> this forms a neat closed box.
>
Thanks to you an DJ, I am now, back in the loop so to speak. I went
back to my PCB
box and found the container that DJ mentioned in 2006. I had started
accumlating the
necessary items back then. It seems I have everything but the air pump
& stone so
I'm about set to finish projects I started way back then.

Many Thanks Stefan for all your help not only on this subject but from
all of your very
informative posts to this list over the years.

Happy New Year to you and yours,

Tschuss
Wayne