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Subject: Freezing glass plate negatives

Freezing glass plate negatives

From: Prue McKay <gnpwood<-a>
Date: Sunday, October 19, 2014
Martha Little <mlittle<-a t->sonic< . >net> writes

>Does anyone have experience freezing glass plate negatives?  Would
>this be acceptable procedure for them?  If so, are there specific
>guidelines we should follow (such as how slowly to bring up the
>temperature afterwards, whether to seal each box in a plastic bag,
>etc.)?  ...

Freezing of glass-based photographs is not recommended.  I would
remove the negatives from the boxes and check them separately for
any insect activity.  The boxes can then be frozen without the
negatives inside.

                  Conservation DistList Instance 28:21
                 Distributed: Friday, October 24, 2014
                       Message Id: cdl-28-22-004
Received on Sunday, 19 October, 2014

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