Definitions for "Acid Migration"
The transfer of acid from one source to another on your page. Placing acidic memories on a page can pass the acid from the source to your photo if you don't take steps to buffer and prevent this.
The transfer of an acid from a more acidic material to a less acidic material with which it is in contact (Nauert 1979).
transfer of acidity from acidic materials to another less acidic material through physical contact or acidic vapors • e.g. newspaper clippings cause discoloration where they are placed and on the items they touch• a de-acidification spray should be used on acidic papers or items should be photocopied on acid free paper