Preparing materials for freeze-drying

As part of the disaster preparedness plan for the Dutch Royal
Library I have studied the best ways of freeze-drying. One question
remained uncertain however. We are not sure how to pack our
monographs before deep-freezing. It is suggested by the
freeze-drying companies to use freeze-resistant 'plastic' bags. Some
suggest leaving the bags open and others prefer the bags closed
before deep-freezing. Of course the bags are removed before
freeze-drying. Does anyone have any experience in packaging before
deep-freezing for preservation purposes, or does anyone have any
suggestions?

Reni Teygeler
J.van Effenstraat 23 bis
3511 HJ Utrecht
The Netherlands


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                  Conservation DistList Instance 16:10
                 Distributed: Wednesday, July 31, 2002
                       Message Id: cdl-16-10-010
                                  ***