Whenever I encounter "archival" enclosures that I'm wary of and can't find manufacturer information for, I usually err on the side of caution and replace them. As far as whether or not you need to remove them ASAP, I would say that depends on the condition of other items in the collection. If you have time, or a volunteer, then sure! But, if you have things wrapped in cardboard and rubber bands, then the ziplock baggies can probably wait.
Even if the bags are made of the proper plastic, I would also be concerned about the potential damage and scratching the plastic zipper portion could cause to the photo when removing it. On that basis alone, I would put it in my queue to be re-housed.
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Whitney Broadaway
Collections Manager
Orange County Regional History Center
Orlando FL
Original Message:
Sent: 03-28-2016 11:05 AM
From: Mel Glover
Subject: Zipper-Lock Bags: Archives Suitability?
Good morning.
I have recently taken over a museum and discovered that my predecessor used a type of zipper-lock baggie in which to store photographs. I'm 85% certain that they're not just the kind you buy from your local grocery store. My gut reaction is that that these cannot be good for my collection. I've unzipped everything but I'm not certain how to tell whether the bags themselves are acceptable. Do they off-gas? Will the emulsion adhere to the plastic? I can find no manufacturer or other information on the bags themselves. Do I need to remove these ASAP? Are they okay for now, but should be changed out in the not-too-distant future? Are they just fine but not the most space-efficient? I know what my instinct tells me but I'd very much like this body's advice.
Mel Glover Superintendent:
-Pioneer Museum
-Ft Fetterman
-Camp Douglas
307-358-9288 (office)
307-359-8721 (cell)
Sempre Gumby!
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