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.