Re: pH of Paper

mprice (mprice@lonestar.utsa.edu)
Thu, 23 May 1996 10:18:45 -0500 (CDT)

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Light Impressions sells a pH tester in pen form. It does not give a
specific pH number, however, it will tell is the paper is acidic.The ink
stays blue if the paper is acid free, turns green if some acid is present
and turns yellow for high levels of acid. The cost is about $4.

misha

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