Regardless of what kind of box, bag, bin, or wrapping is used, just be mindful of risks from condensation. Any cold item removed from the freezer is prone to accumulate moisture from the ambient air. Consider encasing those plastic bins in a large plastic bag until the internal temperature equilibrates with air from the room.
Richard J. Pollack, PhD Senior Environmental Public Health Officer Environmental Health and Safety (EH&S) | Harvard Campus Services 46 Blackstone Street., Cambridge, MA 02139 C: 617-447-0763 www.ehs.harvard.edu [A blue and black logo Description automatically generated]<https://www.linkedin.com/in/richard-pollack-6818997/> From: [email protected] <[email protected]> on behalf of Hingst, Volker <[email protected]> Date: Friday, February 6, 2026 at 8:02 AM To: [email protected] <[email protected]> Subject: [PestList] AW: Request for advice on packaging archives for freezing Dear Lindsey, Yes, we have been working with plastic stacking boxes with lids for years to freeze our own archive material or to have large collections freezed in cold storage. This works very well for books and files. However, leather bindings and especially parchment would be excluded. Our plastic boxes are not air nor watertight – there is no reason. Have a look at the attachments. best regards volker Von: 'Lindsey Gibson' via MuseumPests <[email protected]> Gesendet: Dienstag, 3. Februar 2026 15:59 An: [email protected] Betreff: [PestList] Request for advice on packaging archives for freezing ***Hinweis: Diese E-Mail von [email protected]<mailto:[email protected]> stammt von einer externen Quelle. Öffnen Sie nur Inhalte, denen Sie vertrauen.*** Good afternoon, I have a query about packaging materials for freezing. I routinely freeze paper/books/textiles to deal with insect pests. I wrap in acid free tissue and polythene sealed with self adhesive tape. I reuse the polythene as much as possible but it does need replacing periodically and I’m using fresh self adhesive tape (with a plastic carrier) each time. As a lot of the books and papers I am freezing are similar sized, I was wondering if I could use airtight, watertight plastic boxes instead of polythene and tape. I have found some boxes that are IP56 compliant. 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