[Ronja] Twister2 power problem

[Tomasz Koprowski]

On Tuesday 25 of March 2008 19:33, you wrote:

> It consists of chlorine and iron atoms and water. Both occur in normal
> water naturally. Chlorine atoms occur in large amounts in table salt,
> iron atoms release from steel pipes.

So that's safe. Thanx. What about sodium persulfate? It's the main ingredient 
of "B327", a common etchant sold here in Poland.

Greetz,
Tomek