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> From: eland@knoware.nl (Bas van Velzen)
> Date: Sat, 25 May 1996 10:19:49 +0100
> Subject: Re: pH of Paper
>
> Distilled water is acidic by nature of dissolved carbon dioxide
> forming carbonic acid. 70 grams of mildly acidic water would have
> some effect on the pH of one gram of paper, I would think, unless one
> only wants to know whether the paper is simply acidic (residual acids
> from paper manufacturing) or alkaline (such as buffered with calcium
> carbonate). The point here is that if the paper were perfectly neutral
> (pH 7), after soaking in distilled water for an hour you would get an
> acidic pH reading.
>
> Don't believe everything you read.
>
> John
That is the reason to do a, destructive, warm extraction test: the
carbon dioxide will be out of the way because of the cooking.I will look
up the proper procedure and get it to the list.
Bas
Jonge Eland papierrestauratie
eland@knoware.nl
t +31 20 623 79 89
f +31 20 627 32 23
VeRes (Dutch Association of Professional Restorers)
postbus 11503
1001 GM Amsterdam
PAPER IS ART IS PAPER IS ART IS PAPER IS ART IS PAPER IS ART IS PAPER