Zip lock bags yellowing

From: Emanuele Marconi <*emanuele.marconi<-at-*> Date: Wednesday, May 25, 2016 · emanuele.marconi<-at-

Have you ever had similar experiences with (old or new) polyethylene
bags yellowing?  I am wondering if this can be caused by a
plasticizer or any other additive used in the production.

Emanuele Marconi
Conservator
National Music Museum
University of South Dakota
414 E. Clark St.
Vermillion SD 57069
605-677-5093

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                  Conservation DistList Instance 30:2
                  Distributed: Saturday, May 28, 2016
                        Message Id: cdl-30-2-019
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