A paper having no acidity and no residual acid-producing chemicals so it provide greater longevity. Also called alkaline paper, archival paper, neutral pH paper, permanent paper and thesis paper. Calcium carbonate is used as the filler and a synthetic material, compatible with the alkaline process, as a sizing agent. This process increases the longevity, bulk brightness, opacity and printing characteristics of the paper without added cost.
Alkaline paper, free from chemicals that destroy paper. It lasts longer, but costs more and is generally used for library books.
Any Scrapbooking paper whether it be a design or plain cardstock that has been approved as acid free. Newsprint and construction paper are not acid free
Paper that contains no acid or acid-producing chemicals, which cause it to yellow.
Acid-free papers are manufactured in an alkaline environment, and have a pH reading of 7 that provides an environment that prevents the internal chemical deterioration of the paper. These types of papers often have added calcium carbonate particles that protect the paper from any external acidic environments they may come into contact with. Acid-free papers are useful for the preservation of permanent records and protection of materials that could be damaged when in contact with paper acidity.
Paper having no residual acid-producing chemicals, and a pH of 7 or slightly above 7.
Acid-free paper is paper that has a neutral or basic pH (7 or greater), although paper having a pH between 6 and 7 is often also considered acid-free. During production, it is treated with a mild base to neutralize the natural acids occurring in wood pulp, and it may also be buffered to prevent the formation of additional acids (as may develop from the application of sizing). Acid-free paper is often used in books and other paper products intended to last for a long time. Paper that has not had its acidity neutralized (such as newsprint) quickly yellows and deteriorates.
Paper with a low or zero level of acid. This does not imply that the paper is alkaline-buffered.
Paper which has had the acid removed from the pulp during production so that it has a neutral 7.0 pH.
Paper manufactured in an alkaline environment, which prevents the internal chemical deterioration of the paper over time.
Paper that is free from chemicals that destroy paper. It lasts longer, but costs more. It should be used for all books that are designed to be around for a few decades or longer.
Paper which is made with alkaline sizing and filler instead of acidic sizing. Paper lasts more than four times as long as paper sized with acid (which breaks down in 40-50 years). Just because a paper is acid-free does not mean it is pH neutral.
a treated paper made of wood pulp
Paper treated to neutralize its natural acidity in order to protect fine art prints from discoloration and deterioration.
Acid free paper is a paper that has no acidity. Degree of acid found in a given paper substance measured by pH level. From 0 to 7 is classified acid as opposed to 7 to 14, which is classified alkaline.
Paper that has no acidity and is also slightly alkaline, allowing it to last longer in an acidic environment.
A paper having no acidity and no residual acid-producing chemicals. Acid-free papers may also be slightly alkaline to resist the harmful effects of an acidic environment and provide greater longevity.
Paper manufactured with a controlled pH that is neutral or slightly alkaline.
Paper that is made from cotton fiber, or wood fiber with the lignin(acidic) fiber removed. Acid-free papers help to protect the artwork from discoloration and deterioration.
paper which does not contain free acid and is used primarily for archival purposes
A paper having no acidity and no residual acid-producing chemicals. Acid-free papers may also be slightly on the alkaline side to provide greater longevity.
Paper manufactured on a paper machine with the wet-end chemistry controlled to a neutral or slightly alkaline pH.
Paper made from pulp containing little or no acid so it resists deterioration from age. Also called alkaline paper, archival paper, neutral pH paper, permanent paper and thesis paper.
A paper containing no acidity or acid producing chemicals.
