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Bookkeeper Deacidification Spray


[Preservation Technologies, PA] A registered trademark for a nonaqueous solution of magnesium oxide sold as a deacidification agent for paper. Bookkeeper® Deacidification is a patented process first sold in 1992. It can be used in a large scale mass deacidification system or as individual spray products.

Synonyms and Related Terms

Bookkeeper Deacidification Spray; magnesium oxide

Other Properties

Meets ISO 14523 Photographic Activity Test (Permanence Institute)

Additional Information

° Preservation Technologies: Website° P. Whittmore, "Evaluation of the Bookkeeper Process Chemistry" Link


  • Conservation Support Systems, Catalog, 1997

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