Re: temperature & humidity

Oksana Dykyj (
Thu, 7 Jun 2001 07:46:07 -0700 (PDT)

The absolute worst thing to do to a collection is to fluctuate the
temperature and humidity. There will probably be less damage done to the
collection if it is in a warmer and more humid environment consistently
than if it keeps going up and down all the time. The desired, workable
conditions for video storage should be 60- 65F and NEVER exceeding 75F with
a 25-30% RH NEVER exceeding 35%.

Film storage is a different story. An active (non-archival) film collection
should be stored at 50-60F and 20-30% RH. If possible color film should be
stored in as cold an environment as possible.

Finally, ventilation is key. Air circulation is very important. So, you get
a double whammy if systems are shut down nights and weekends: no air and
heat+ humidity.

At 06:11 AM 6/7/01 -0700, you wrote:
>What are the recommended temperature and humidity for video storage?
>I'm sure I have the info somewhere, but you guys answer faster than I can
>clean my filing cabinet...
>The university suddenly decided there's an energy crisis and raised all the
>Even though we've told them before that this area should be treated as an
>archival area, the temperature is well above where it should be.
>(Naturally it's futile to point out that staff doesn't work well when their
>offices are hot.)
>Barbara J. Bergman Porter Henderson Library
>Media Librarian Angelo State University
>ph: (915) 942-2313 Box 11013, ASU Station
>fax: (915) 942-2198 San Angelo, TX 76909
>Buffy: You need to have some fun.
>Giles: I'll have you know that I have very many relaxing hobbies.
>Buffy: Such as?
>Giles: I enjoy cross-referencing.

Oksana Dykyj voice: 514-848-3443
Head, Visual Media Resources fax: 514-848-7622
Instructional & Information Technology Services
Concordia University
LB-805-1, 1455 de Maisonneuve Blvd. W,
Montreal, Quebec
Canada H3G 1M8