Preservation quality silver gelatin microfilm master on polyethelene terephthalate base that is properly created processed and stored has an ANSI AIIM life expectancy (LE) rating of 500 years.
National Library of Medicine
----- Original Message -----
From: Richard L. Hess [mailto:[log in to unmask]]
Sent: Friday, November 15, 2013 03:15 PM
To: [log in to unmask] <[log in to unmask]>
Subject: Re: [ARSCLIST] Microfilm reader (was: "Slide-tape show" Software)
On 2013-11-15 3:19 PM, Don Cox wrote:
> Assuming the microfilm is on a modern film base, it is not at all likely
> to turn to dust. Silver-based film, provided it has been correctly
> processed, is very long lived.
> You will give up on migrating your digital files before the microfilm
My understanding is that a fair amount of microfilm is not silver-based
but rather dye-based and is fading.
I hope I'm wrong.
I don't have time to Google this right now.
-- Richard L. Hess email: [log in to unmask]
Aurora, Ontario, Canada 647 479 2800
http://www.richardhess.com/tape/contact.htm Quality tape transfers --
even from hard-to-play tapes.