Homebrew PCBs

it was not hellmembers but hello members ..sorry ..or a good laugh.

thank you Leon
Then I can relax and buy a new portion.
alex

--- In Homebrew_PCBs@yahoogroups.com, "leon Heller" <leon355@...> wrote:
>

> 
> I use FeCl3, but used ammonium persulphate many years ago. The solid stuff 
> lasts indefinitely provided that it is kept dry.
> 
> Leon
>