As Richard pointed out, today films are being stored in ventilated cans for
a variety of reasons with the main rationale to help prevent vinegar
syndrome. Ventilated cans permit the dissipation of acidic decomposition
by-products from the film can which in turn encourages the diffusion of the
by-products from the film pack. This is important because the acidic
by-products are a catalyst for the decomposition reaction and thus
accelerate the reaction. ProVent and ProVent Audio containers are
ventilated to allow the film and audio tape to "breathe". Hope this helps.
[log in to unmask]
From: Association for Recorded Sound Discussion List
[mailto:[log in to unmask]]On Behalf Of Richard L. Hess
Sent: Tuesday, August 02, 2005 9:41 PM
To: [log in to unmask]
Subject: Re: [ARSCLIST] Acetate disc sleeves
I am sure there is room for debate, but films are being stored in
ventilated cans these days for a variety of reasons.
You might browse
I think Hollywood Vaults and the National Film Board of Canada are
using this product -- at least for some of the storage.
You might ask over on the AMIA list for this.
At 09:33 PM 8/2/2005, you wrote:
>What are your preferred sleeves for storing acetate (nitrocellulose) discs?
>Here's the debate (per "Preservation and Storage of Sound Recordings",
>Pickett and Lemcoe, 1959):
>1. The deterioration of nitrocellulose is accelerated by moisture
>2. The deterioration of nitrocellulose is accelerated by lack of air
Richard L. Hess email: [log in to unmask]
Media web: http://www.richardhess.com/tape/
Aurora, Ontario, Canada (905) 713 6733 1-877-TAPE-FIX
Detailed contact information: http://www.richardhess.com/tape/contact.htm