Jan 19, 2000

Anne,

In my experience some poly bags turn yellow in as little as a couple of
years and must be replaced, others seem to last for many years.  I don't
know why that is.  (I've never heard of archival poly bags.  I thought all
polyethylene was archival.  Maybe that's my problem.)

-Jim lyons
http://www.jimlyons.com./Preservation.html

=================

>>Help!!!  I've got a quickie research project to do on the pros and cons of
>>using polyethylene storage bags for collection objects.  I've searched all
>>the usual suspects - AIC, CoOL, the Getty, Museum-L archives, you name it.
>>There's nothing conclusive out there.  What I'd like to know is if you have
>>any more arcane information dealing with permeability to humidity, gases,
>>pollutants; any dangers from off-gassing or breakdown products; how
>>important it is to use "archival" grade polyethylene, the whole nine yards.
>> Or suggestions of more obscure sites that would have some information.  Or
>>personal experiences / recommendations.  If you could get me some info in
>>the next couple of days, I would lick your boots.  Provided they were
>>sealed in polyethylene.
>>TIA,
>>Anne
>>Anne T. Lane, Collections Assistant
>>Museum of York County
>>4621 Mount Gallant Road,
>>Rock Hill, SC 29732-9905
>>803-329-2121, ext. 104
>>FAX 803-329-5249

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