This paper reviews the current status of the zeolite molecular sieve technology for film preservation since its introduction in 1993. We have successfully developed products and procedures for motion-pricture, microfilm, and aerial film segments and disseminated the information to the preservation community (1-5). The molecular sieves scavenged the acides, moisture, oxidants, and solvents generated by the films under confined storage, thus suppressing the acid-catalyzed hydrolytic degradation of the cellulose triacetate (CTA) support and the resulting loss in dye stability of color motion-picture films.
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