The American Society for Testing and Materials (ASTM) has completed a five-year program of research into the aging of printing and writing papers. From studies at five internationally respected research institutions have come three methods to accelerate paper aging. The methods use elevated temperature, elevated light flux and elevated concentration of the common atmospheric pollutant gas, nitrogen dioxide, to accelerate aging. Because of the careful scientific inquiry involved, the research professionals can provide assurance that the methods are scientifically sound. They generate physical and chemical changes in paper that are essentially the same as those that occur after long-term natural aging. Use of the test methods permits evaluation of the stability of papers to long-term natural aging effects and allows for their classification into stable, moderately stable and unstable categories. The test methods can be used for both new and old papers to assess their stability to future aging.
Contributions to the Baltimore Congress 2-6 September 2002
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