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safety film |
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safety film [′sāf·tē ‚film] (graphic arts) Films made from cellulose acetate, polyester, and other plastics that are not readily flammable. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Some advances in this area include A-D Strips produced by the Image Permanence Institute, which can be placed in enclosed spaces, such as drawers and boxes, to detect the presence of acetic acid, the primary indicator of "vinegar syndrome," or the chemical decomposition of cellulose acetate film bases (Image Permanence Institute, 2002a). These conditions preserve the inherently unstable cellulose acetate film base used with the great majority of photographic films, as well as the generally very unstable dye images of the color transparencies and color negatives found in historical collections. |
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