Re: [ARSCLIST] audio reel archival containers

[Mwcpc6@xxxxxxx]

In a message dated 8/9/2004 5:11:12 PM Eastern Standard Time, ArcLists@xxxxxxxxxxxxxxx writes:

I'm suspicious
that the traditional cardboard box is functioning something like a
molecular sieve and absorbing some of the acetic acid outgassing/effluent
from the tapes and retarding any vinegar syndrome.

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Keeping tape in unsealed cardboard boxes does seem to help preserve it.

 

"ProVent Audio's vented design allows active airflow through the container to prolong the life of audio tape or 8mm film."

 

Everything I've seen indicates that you want to get the acetic acid out of the room completely, not trap it near the acetate.  Controlling the room's humidity should prevent excessive drying.

 

The thickness of film base may be a factor in preventing the acetic acid from leaving the material, explaining the faster deterioration, however the compulsion to seal film in metal cans in sealed vaults certainly has a greater effect. I've yet to see vinegar syndrome in any of my 40+ year old tape or film, however the material I just received from a friend who was meticulous about "protecting" his material definitely does show the effect (now stored in a separate room for airing).

 

Mike Csontos