Multipurpose for Certain Textiles or Photographic Prints
Over time most tissue paper will become acidic and brittle with age. The acidity will transfer to adjacent objects causing these objects to become weaker and possibly discolored. Acid free tissue papers are specially processed to remove such contaminants. Some acid free papers are, in addition, buffered to an alkaline pH. These buffered papers are considered acceptable for cotton or linen textiles, but potentially harmful to silk or wool objects (and some color photographic materials). Passes the P.A.T. test for enclosures (but is not used for certain photographic products sensitive to buffering).