For Acid Free we have terms and definitions in 6 topics. The topics are Archival, Artist, Paper, Photography, Scrapbooking and Watercolor.

Acid Free (Archival)

In chemistry, materials that have a pH of 7.0 or higher. Sometimes used incorrectly as a synonym for alkaline or buffered. Such materials may be produced from virtually any cellulose fiber source (cotton and wood, among others), if measures are taken during manufacture to eliminate active acid from the pulp. However free of acid and paper or board may be immediately after manufacture, over time the presence of residual chlorine from bleaching, aluminum sulfate from sizing, or pollutants in the atmosphere may lead to the formation of acid unless the paper or board has been buffered with an alkaline substance.

Acid Free (Artist)

Acid free refers to papers without acid (pH) in the pulp when manufactured. High acidity papers degrade quickly.

Acid Free (Paper)

Paper made in a neutral pH system, usually buffered with calcium carbonate. This increases the longevity of the paper.

Acid Free (Photography)

Specially prepared mounting boards, album pages, tissues, and storage boxes designed to house prints for maximum archival permanence.

Acid Free (Scrapbooking)

Refers to paper that has a pH factor of 7 to 8.5. If acid is found in the materials that are used for scrapbooking it can react chemically with photos and cause deterioration. All papers, glue, pens, pencils etc need to be acid free.

Acid Free (Watercolor)

Acid free refers to papers without acid (pH) in the pulp when manufactured. High acidity papers degrade quickly.

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