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.
- 19th pH Survey of new publications (2007) (Web Archiving Project (WARP))
- 17th pH Survey of new publications (2003) (Web Archiving Project (WARP))
- Annual pH Survey (1986-2001) (Web Archiving Project (WARP))
(for details) Sixteen Years of pH Surveys on Newly-acquired Materials (International Preservation News28 pp27-30) (PDF: 39KB)