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. 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. ST On Mon, Jan 5, 2009 at 6:57 PM, Wayne Topa <linuxone@...> wrote: > Stefan, was it you who kept your CuCl in a double capped bottle with > small holes in each > "plastic?" cap to slow down the evaporation of the H2O2? And do you air > bubble the > solution?
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Re: [Homebrew_PCBs] Shelf life of HCl/H2O2
2009-01-05 by Stefan Trethan
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