Re: [NTLK] Cleaning the screen with isopropyl alcohol is bad

From: Mark Ross (
Date: Wed Nov 03 2004 - 04:26:39 PST

Denatured alcohol is nothing more than drinking alcohol (ethanol) with
a small amount of an additional additive (such as toluene) to make you
sick if you try to drink it. It is more polar, and therefore, less of a
solvent than isopropanol. Most rubbing alcohols are 70% isopropanol and
the rest water. You can find 90% isopropanol in stores, but the water
will reduce its ability to remove non-polar materials. Here is an
example where someone wanted to remove the screen coating with alcohol
and succeeded. Lesson learned - do not use any alcohol on your Newton
On Nov 1, 2004, at 8:23 PM, Woody Smith wrote:

> I was experimenting to discover a solvent, I used denatured alcohol, a
> somewhat stronger solvent than isopropyl and the other solvents that I
> mentioned on a badly scuffed area of the display. I kept the area
> saturated for about 3 minutes but I left the stripper on for about 10
> minutes.
> Woody

Mark Ross
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