pH testing

We recently received an order of paper sold to us as "acid free" that
did not bear the archival watermark.  When this was questioned, I used
the pH pen marketed by the Abbey newsletter to determine whether the
paper was in fact alkaline.  My question is this--when using the pH pen,
almost any new paper tests as alkaline.  How can one determine if the
paper is buffered so it will stay that way?  Any suggestions?  Thanks!

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                  Conservation DistList Instance 6:34
                  Distributed: Sunday, January 3, 1993
                        Message Id: cdl-6-34-017
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