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Re: [Homebrew_PCBs] Shelf life of HCl/H2O2

2009-01-05 by Wayne Topa

DJ Delorie wrote:
> Wayne Topa <linuxone@...> writes:
>   
>> DJ, do you keep yours CuCl in a rubbermaid kitchen container, with a
>> lid on it?  If so, do you air bubble the solution?
>>     
>
> I keep it in a rubbermaid container, yes, with the lid on it when not
> in use.  There's a hole in it where the air tube goes through, so it's
> not 100% sealed (just 99.9% :).
>
> I use an air stone bubbler when I'm etching, as well as an aquarium
> heater.  I turn both on about half an hour before etching (i.e. early
> in the whole print/develop/etch process) but remove the lid at that
> time.  I don't store the heater in the etchant, but I do leave the air
> stone in.
>
> I do have a vent hood over the whole works, too.
>   
Thanks DJ.  As I mentioned to Stefan, it was your post in 2006 that I 
followed when I was
putting together my PCB junk box.  I see I have all but the air pump so 
I'm good to go,

Thanks again for the help, this time, and for the years of  relaxation 
that the Ace of Penguins
 has given me and many others.   You are a multi-tasker of the best kind.

Happy New Year to you and Yours,

Best regards,
Wayne

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