But not PVC (polyvinyl chloride).

-----Original Message-----
From: Timothy McShane [mailto:[log in to unmask]]
Sent: Thursday, August 28, 2003 8:17 AM
To: [log in to unmask]
Subject: Re: polyethylene vs. polypropeline(sp?) sleeves/bags [faked-from]

I'm not a conservator, but it has been my understanding that as a
general guideline, "poly" plastics are safe.  This includes both
polyethylene and polypropylene, as well as polystyrene and polyester.

Cheers,



------------------------------------------------------------
Tim McShane, Assistant--Cultural History
Medicine Hat Museum and Art Gallery
1302 Bomford Crescent S.W.
Medicine Hat, AB   T1A 5E6
(403) 502-8587

>>> [log in to unmask] 08/27/03 07:46PM >>>
Hello, does anyone know if polyethylene and polypropylene sleeves/bags
have the same archival qualities? I have used the former before and am
confident they are harmless, but not polypro bags. Thanks, Keith

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