Acid Free Paper

Revision as of 18:31, 29 October 2007 by MrMurk (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Acid Free Paper has a neutral pH which gives the paper archival qualities(500+ years). Paper made from a wood based pulp without the lignin(acid) removed will deteriorate and yellow over time. Removal of the naturally occurring acids found in wood pulp using a bicarbonate stablizes the paper. OBEY uses acid free paper for print making.

This is the symbol for acid free paper: