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 PA 17257
717-477-1516
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