Re: remove markings from pyrex glassware
From: Dirk Bruere at Neopax (dirk_at_neopax.com)
Date: 10/11/04
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Date: Mon, 11 Oct 2004 17:44:37 +0100
Uncle Al wrote:
> Sean wrote:
>
>>Does anyone know how to remove markings from pyrex glassware?
>>
>>I want to make the pyrex disappear in another container that contains
>>wesson oil. this should work because the indices of refractions are
>>similar, but the disappearing pyrex needs to be free of markings.
>
>
> The fused white glass marking frit will slowly dissolve in hot
> concentrated ethanolic KOH while the Pyrex will mostly hang in there.
> This is incredibly hazardous to tissue. It will instantly blind you
> if it gets in your eye. Don't play with HF at all.
Why is ethanolic KOH so corrosive?
-- Dirk The Consensus:- The political party for the new millenium http://www.theconsensus.org
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