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Top > About Us > Preservation and Conservation > Collection Care > Paper > pH Annual Survey of Newly-acquired Materials

pH Annual Survey of Newly-acquired Materials

In order to promote the use of acid-free paper, the NDL had conducted the pH survey for about 20 years. The followings are a short report of the last survey and an article referring to the details of the survey.

(for details) Sixteen Years of pH Surveys on Newly-acquired Materials (International Preservation News28 pp27-30) (PDF: 39KB)

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