Preservation of Motion-Picture Color Films Having Permanent Value

Preservation of motion-picture color film records that have permanent value requires good dye stability as well as the absence of physical defects. These are dependent upon the intrinsic properties of the film itself as well as upon the extrinsic factors of storage conditions. Intrinsic factors covered are the effect of processing and the value of storing silver separation masters. Extrinsic factors discussed are the effects of relative humidity, temperature, light, storage materials and air purity. For long-term preservation, it is recommended that films be stored at 35°F with controlled humidity or in deep freeze units. Alternate packaging recommendations are given which differ in the degree of protection provided and their cost.