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. Acid-free paper addresses the problem of preserving documents and artwork for long periods.
Read more about Acid-free Paper: Overview, Standards, Archival Paper
Famous quotes containing the word paper:
“They come on to my clean
sheet of paper and leave a Rorschach blot.
They do not do this to be mean,
they do it to give me a sign....”
—Anne Sexton (1928–1974)