Home > CLIR Publications > CLIR Reports > Accelerated Aging of Polyester-Based Legacy Audio Magnetic Tape Stock
Andrew R. Davis, Fenella G. France, Jamie Shetzline, Peter Alyea, Kazutoshi Katayama, Yuichi Kurihashi, Hiroaki Doshita, Rich Gadomski
August 2022. 37 pp. (electronic only)CLIR pub 181
PDF download >>
This study reports on new research into the longevity of polyester-based magnetic audio tapes. Open-reel test tapes produced 10 to 20 years ago were subjected to a variety of accelerated temperature and relative humidity ranges, chosen to best predict and assess potential conditions for storage in institutions with and without controlled environmental options. Changes to the tapes' physical, magnetic, and chemical properties were measured to assess their impact on the tapes' usability. The results indicated that under standard room temperature conditions, the tapes tested may remain usable for as long as 100 years, more than doubling previous estimates, a finding that could have significant implications for preservation planning of audiovisual collections.
Council on Library and Information Resources1800 Diagonal Road, Suite 600Alexandria, VA email@example.com
CLIR is an independent, nonprofit organization that forges strategies to enhance research, teaching, and learning environments in collaboration with libraries, cultural institutions, and communities of higher learning.
Sign up for news from CLIR.
Unless otherwise indicated, content on this site is available for re-use under CC BY-SA 4.0 License