Homebrew PCBs

The ferric chloride is not the problem, the copper is.
Copper is poisonous to bacteria and such.

ST


On Fri, 09 Dec 2005 17:03:38 +0100, Leon Heller  
<leon.heller@...> wrote:

>
> It's basically iron, copper and chloride ions in solution. I can't see  
> the
>
> small quantities used for home etching causing any problems with water
>
> treatment. What the water companies don't like are chemicals that kill  
> the
>
> bacteria in their sewage treatment plants, like some chlorinated  
> solvents.
>
> That is what I was told many years ago by someone from the water company  
> who
>
> used to test the outflow where I worked, at random intervals, several  
> times
>
> a year. I just flush it down the lavatory when it is exhausted.
>
>
> Leon
>