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Archival paper is an especially permanent, durable acid-free paper. Archival paper is meant to be used for publications of high legal, historical, or significant value. In the USA, such paper must also be approved in accordance with the ANSI standards. [15] The international standard for "permanent" paper is ISO 9706 and for "archival" paper ...
Cotton paper is typically graded as 25%, 50%, or 100% cotton. Usually it can be checked by holding the cotton paper up to the light and looking just below the watermark for a number. 100% cotton paper may contain small amounts of acids, and should be tested or certified before use for archival documents.
The front-edge of the case often contains a clasp for closure. The exterior is covered with heavy paper, fabric, buckram or leather, and its interior may be lined with padded paper or felt, especially if made for a book. All materials should be acid-free for conservation.
Manuscripts and paper documents are often stored in protective archival-quality boxes and folders, made of acid-free and lignin-free materials. [52] Documents with heavy use may be stored or encapsulated in a clear polyester (Mylar) film sleeve or folder.
Archival acid-free paper products can be either buffered or unbuffered. Unbuffered paper has a neutral pH and is used for housing photographs, textiles, and most other types of objects, while buffered paper, which is impregnated with calcium carbonate and has an alkaline pH, is used for storing paper objects. [3]
Store these sentimental treasures in individual containers or wrap them in acid-free tissue paper to prevent discoloration. Small plastic bins or archival-quality storage boxes can protect these ...
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