AND; There is a world of difference between spreading the stuff
(whatever it was) over many square feet (or meters) on a driveway
and using less than a half-liter (a pint or so) in a glass tray to
etch a circuit board.
Like, its a matter of proportion.
Pardon my sarcasm.
Roland F. Harriston
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Randy Ledyard wrote:
>
> > -----Original Message-----
> > From: Homebrew_PCBs@yahoogroups.com
> <mailto:Homebrew_PCBs%40yahoogroups.com>
> > [mailto:Homebrew_PCBs@yahoogroups.com
> <mailto:Homebrew_PCBs%40yahoogroups.com>]On Behalf Of Lez
> > Sent: Saturday, January 27, 2007 11:05 AM
> > To: Homebrew_PCBs@yahoogroups.com
> <mailto:Homebrew_PCBs%40yahoogroups.com>
> > Subject: Re: [Homebrew_PCBs] UK'ers, anyone in uk _not_ using fecl ?
> >
> >
> > I have used their driveway cleaner before, my neighbor came out
> > complaining about the smell, I was stood in the middle of a 10ft
> > diameter well wet area and could not smell a thing, I thought he was
> > 'in need of medication' till the wife came out and complained too, I
> > guess I just could not smell the stuff, rotten eggs I think he said,
> > does that sound familiar?
> >
> >
> >
> > Lez
> >
>
> That sounds like it must have been Sulfuric Acid-based (H2SO4), and you
> somehow generated Hydrogen Sulfide (H2S) - which gives off the
> "rotten-egg"
> smell
>
> And that is _NOT_ the acid you want....
>
> Randy
>
>