Cold storage of film
The life expectancy of a film can be lengthened by lowering the temperature under which the film is stored. In 1889, Savante Arrhenius showed that the rate constant of a reaction was dependant upon temperature.
As temperatures drop, the movement of molecules slows down and lowers the rate at which chemical reactions can take place, reducing the rate of the decomposition reaction. In practical terms the rate approximately halves for every 5°C drop in temperature and conversely doubles for a 5°C increase.
- 1995, New Tools for Preservation, Assessing Long-Term Environmental Effects on Library and Archives Collections: The Commission on Preservation and Access
- Bigourdan, J-L., and Reilly, J., 1997, Environment and Enclosures in Film Preservation, Final Report to the Office of Preservation National Endowment for the Humanities: Image Permanence Institute
- Chang, R., 1991, Chemistry, 4th Edition, McGraw-Hill
- Clark, Susie (ed), 1998, Care of Photographic Moving Image & Sound Collections: Proceedings of Photo 1998, York
- Kopperl, DF, Bard, CC, 1985, Freeze/Thaw Cycling of Motion Picture Film, SMPTE Journal, August 1985