Homebrew PCBs

zl1gbb wrote:
> Hi I am sure someone can help me. What should I do with chemicals used in
> making pcb's? I have a winchester of used Ferric Chloride which I would like
> to safely dispose of. Does this need any treatment and how should it be
> disposed of?
> 
> Info on any other common chemicals would also be appreciated. Is there a
> common philosophy such as kill all chemicals etc?

If you keep the Ferric Chloride in a container with a lid and add a bit of
HCl every few months before a use, it will etch PCBs for years if you use
air bubbler agitation. Better to keep it.