Repeat postings <was Re: pH testing of paper>

Greg Schmitz (gws1@columbia.edu)
Wed, 5 Oct 1994 14:18:13 -0400 (EDT)

This is a copy of a post I made back in May or June; something must be
wrong with the listprocessor, as I have not "reposted" it. It was in
my email box when I came to work this morning - how it got there I can
only guess.

While I am still interested in issues relating to paper pH, most of my
question have been answered. I guess this is as good a time as any to
thank those who responded, esp the folks at the National Library in
Australia.

What is going on with the Listprocessor - does anyone know? I've
noticed a number of repeat msgs, as well as some that were posted many
moons ago, like this one.

greg <gws1@columbia.edu>

On Wed, 5 Oct 1994, Greg Schmitz wrote:

>
> Greetings all,
>
> I am interested in any info you might have about testing paper pH. I
> believe this is a topic of some relevance to this group for obvious
> reasons. Pointers, bibliographies and personal methods would all be
> appreciated and welcome.
>
> I have just begun to investigate this topic and will consolidate and
> repost any information furnished. I suspect paper testing might be
> something worth including in the FAQ which I understand is now under
> construction. To date I am aware of several methods, aside from "pH pens"
> (which only provide a gross indication of the paper's pH): cold
> extraction, hot extraction, flathead electrode and color indicator. I
> found reference to these methods via the WAIS COOL database maintained by
> Walter Henry at Stanford (CA - USA), but could not find descriptions of
> the techniques.
>
>
> greg schmitz
> gws1@columbia.edu
>
>
> P.S. Unless you explicitly tell me that you do not want the material you
> send me reposted, or your name associated with it, I will assume that you
> have no objections to including it in any subsequent reposts.
>