Polyethylene bags

Are ordinary reclosable polyethylene bags, such as the ones sold in
grocery stores under the brand name "Zip-Lok", really dangerous to use
for storing, say, pamphlets?  According to the University Products
catalogue, "ordinary plastic bags, vinyl envelopes or pages contain
harmful chemical additives that can migrate to paper contents causing
accelerated aging, staining and  embrittlement.  Mylar archival
polyester envelopes are completely inert  . . . for safe archival
storage".

Donald Farren
4009 Bradley Lane
Chevy Chase, MD 20815
301-951-9479
Fax: 301-951-9479 ext 23

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                  Conservation DistList Instance 7:85
                  Distributed: Wednesday, May 25, 1994
                        Message Id: cdl-7-85-010
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