Homebrew PCBs

Darn, I have 2 bottles of ammonium persulphate,  I was hoping it was the
newer better stuff.  I'm finishing my curent batch of ferric chloride and
was planning on switching to the crystals then.  I'm hearing nothing but
good about sodium P, I might just put the ammonium P in extended storage and
buy some sodium P instead.

Robert
:(



> -----Message d'origine-----
> De : Homebrew_PCBs@yahoogroups.com 
> [mailto:Homebrew_PCBs@yahoogroups.com] De la part de mycroft2152
> Envoyé : mai 4 2006 17:45
> À : Homebrew_PCBs@yahoogroups.com
> Objet : [Homebrew_PCBs] Status on Direct to pcb inkjet printing
> 
> 
...
> 
> Sodium Persulfate is a good replacement for Ammonium Persulfate for 
> its compatibility with etch resist pens. Sodium Persulfate will not 
> remove etch resist ink and like Ammonium Persulfate crystals, are 
> used as an alternative to the traditional ferric chloride to produce 
> a cleaner copper etchant solution.
...