Homebrew PCBs

I can always find 90% isopropyl alcohol at my local Walgreens drug 
emporium or
at the  Safeway supermarket. I'm quite sure that this material is widely 
available.
A 16oz  bottle  is worth about a  dollar.
The stuff is water clear with no additives. I also see on the shelves a
"Rubbing Alcohol" that is tinted green and  it contains some other
ingredients, perhaps wintergreen or some such.

I've been using  90% isopropyl for many years as a general purpose
cleaner.

It is relatively safe, although flammable, and the fumes are
not too nasty.

Roland F. Harriston











DJ Delorie wrote:
>
>
> "Leon Heller" <leon.heller@... 
> <mailto:leon.heller%40bulldoghome.com>> writes:
> > I forgot to mention that it might contain oil of wintergreen, which 
> will
> > leave an oily residue. Pure IPA is best, and is easy to obtain from
> > electronic suppliers.
>
> Ok, the two alcohols I have are both 70% alcohol, with nothing else
> but water. They got off most but not all of the residue. The water
> pic didn't do much for the remainder. Xylene helped a little, but
> there's still residue.
>
> Time to email the manufacturer, I suppose.
>
>