Just found this in a pile of papers. It is a note to myself on the latests
results of testing, but again
this does not apply to the archival gold CDs.
The National Institute of Standards and Technology NIST
only rates ordinary CDs and DVDs at 30 years under archival conditions which
are;
Temperature between 20oC and 4oC Relative Humidity 20 -50 %
Ideal Conditions: 18oC 40% Rel. Humid.
Keep away from : sunlight or strong UV light , rapid temperature changes,
excessive humidity,
fingerprints, magic markers etc. and store upright.
Bob Schramm
Check out my web page at:
<br><br><br>>From: "Robert W. Schramm"
<schrammrus@hotmail.com><br>>Reply-To:
alt-photo-process-l@sask.usask.ca<br>>To:
alt-photo-process-l@sask.usask.ca<br>>Subject: Archival CDs<br>>Date:
Fri, 24 Jun 2005 22:49:49 -0400<br>><br>><br>>I'm going to put on
my archivist's hat since the subject of damage <br>>to CDs came up.
Several scientific tests have been run on various <br>>types of CDs and
bloc error rates as a function of some of the <br>>things that cause CDs
to deteriorate have been determined. Primarily <br>>these are light and
heat and secondarily subjection to various <br>>chemical compounds,
humidity and even gravitation (store CDs <br>>vertically, not in a big
pile. Gravity tends to warp them if they <br>>lay flat in a pile).
Accelerated heat and<br>>light tests are run and then extrapolated to
normal heat and light <br>>conditions. Assuming normal conditions,
archivists now consider <br>>ordinary CDs with a dye coating good for
about 80 years if they are <br>>well taken care of.<br>><br>>The
big news is that there was one type of CD tested that had a gold
<br>>base coating that indicated<br>>a lifetime of 300 years! The even
better news is that these are now <br>>available . They are
called<br>>"Archival Gold The 300 Year Disc" Made by Delkin
Devices. They are <br>>74 min. 650 MB discs. You can<br>>buy them at
www.delkin.com<br>><br>>They cost much less than making an 8x10
chrysotype ;-) 25 discs <br>>for around $37.00. Cheaper if you buy 100.
I hope this company will <br>>consider making archival gold DVD
discs.<br>><br>><br>>Bob
Schramm<br>><br>><br>><br>>Check out my web page
at:<br>><br>> http://www.SchrammStudio.com<br>><br>><br>
Received on Fri Jun 24 21:32:36 2005
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