Unprocessed Film Before and After Exposure
Exposed film, particularly color, deteriorates more rapidly than unexposed film. Process films as soon as possible after exposure.
Do not keep film in the camera or magazine longer than is necessary. If you load magazines a long time ahead of use, protect them from excessive temperature and relative humidity until you need to load the camera.
Keep loaded cameras or magazines and carrying cases out of closed spaces that can trap heat from the sun or other sources such as closed automobiles, airplanes, or the holds of ships.
Immediately after exposure, return the film to its can and retape the can to help prevent any increase in moisture content.
Processed Film Storage
The following suggestions apply to extended storage of all motion picture films. Be aware that color dyes are more prone to change than are silver images over extended periods, with heat and humidity being the chief factors. Before any extended storage (ten years or more), these minimum guidelines should be followed:
1.Make sure the film was adequately washed to remove residual chemicals, and the residual hypo level does not exceed the recommended maximum. ANSI PH 4.8- 1985 describes a test method for residual hypo.
2.At present, only EASTMAN EKTACHROME Motion Picture Films require stabilization during processing for dye stability. Be sure process specifications have been strictly followed.
3.All film should be as clean as possible. Cleaning is best done professionally. If you use a liquid cleaner, provide adequate ventilation. Adhere to local municipal codes in using and disposing of any solvents.
4.Keep film out of an atmosphere containing chemical fumes, such as hydrogen sulfide, hydrogen peroxide, sulfur dioxide, hydrogen sulfide, ammonia, coal gas, and automobile engine exhaust.
5.Do not store processed film above the recommended 21°C (70°F), 20 to 50 percent RH for acetate or for polyester, if extended life expectancy is to be maintained.
16