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From: hyder@hpfcpkh.UUCP (hyder)
Newsgroups: net.rec.photo
Subject: Re: Transparency Longevity
Message-ID: <3600003@hpfcpkh.UUCP>
Date: Tue, 7-Aug-84 11:21:00 EDT
Article-I.D.: hpfcpkh.3600003
Posted: Tue Aug  7 11:21:00 1984
Date-Received: Thu, 30-Aug-84 01:19:14 EDT
References: <1738@tekig1.UUCP>
Lines: 16
Nf-ID: #R:tekig1:-173800:hpfcpkh:3600003:000:718
Nf-From: hpfcpkh!hyder    Aug 21 07:21:00 1984

Storage in the dark for photo images is just the start.  The main
image destroyers are (In order):
	1. Light.  It's a shame you ever need to look at them.
	2. Heat.  This one is subtile.  The WORST possible second
	   choice for storage is a Hot dark place.  (The light in
	   number one usually adds heat to the situation.)
	3. Oxygen.  In most of the air around here.

NOTE:  #1 and #2 are in close competition for which is worse, it
       depends on the material in question and how it was processed.
       (We are talking organic dyes.)

The best storage is sealed in small, air tight, opaque, containers
under refrigeration.  (Frozen if possible.)

	Paul Hyder  {HP-FSD Fort Collins   ...!hplabs!hpfcla!hyder }