Hello,

 

We have some old (20 years?) Plasti-Kleer Mylar picture covers.  Our pH
pen says they are not acid free.  Were they ever?  Should we throw them
away?  I hate to do that because they are so nice for storing photos.
But if they would damage the photos, there is no point in using them.

 

Karen Daniel

Archives & Special Collections Librarian

Ezra Lehman Library Memorial Library

Shippensburg University

1871 Old Main Drive

Shippensburg PA  17257

717-477-1516

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