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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]
Acid-free paper is paper that, if infused in water, yields a neutral or basic pH (7 or slightly greater). It can be made from any cellulose fiber as long as the active acid pulp is eliminated during processing. It is also lignin- and sulfur-free. [1] Acid-free paper addresses the problem of preserving documents and preserving artwork for long ...
Polyester sleeves, acid-free folders, and pH buffered document boxes are common supportive protective enclosures whose selection must match the media's chemical and physical properties. [1] Other considerations in preserving paper/books are: Damaging light, particularly UV light, which fades and destroys media over time by breaking down the ...
Paper enclosures protect objects from light, but may result in increased handling for viewing. [12] Paper enclosures must be acid-free, lignin-free, and are available in both buffered (alkaline, pH 8.5) and unbuffered (neutral, pH 7) stock.
A paper conservator surveying a collection of materials in storage. Storage in a cool, dry, clean, and stable location can extend the life of an item. [51] Manuscripts and paper documents are often stored in protective archival-quality boxes and folders, made of acid-free and lignin-free materials. [52]
The preferred method for storing manuscripts, archival records, and other paper documents is to place them in acid-free paper folders which are then placed in acid-free of low-lignin boxes for further protection. [21] Similarly, books that are fragile, valuable, oddly shaped, or in need of protection can be stored in archival boxes and enclosures.
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These objects can be protected further by being wrapped in unbuffered, acid-free tissue paper and/or placed in a sealed polyethylene bag when being transported. [2] Bone, antler, and horn objects are stored in tightly closed display cases or drawers to buffer them from sudden changes in temperature and relative humidity while shielding them ...