The BookKeeper process is a non-aqueous, liquid phase process that uses magnesium?oxide. BookKeeper is available through Preservation Technologies, L.P. with plants in the U.S., Spain, Japan, Poland, The Netherlands, and South Africa.

The CSC Book Saver uses carbonated magnesium propylate for deacidification. It is available through Conservación de Sustratos Celulósicos S.L. (CSC) (Barcelona, Spain).

The Papersave process was developed by Battelle Ingenieurtechnik GmbH and is, therefore, sometimes referred to as "the Battelle Process". The process uses magnesium titanium alkoxide. It is available in Europe through Nitrochemie Wimmis (Wimmis, Switzerland) under the name of Papersave Swiss and the Zentrum für Bucherhaltung (Leipzig, Germany).

The Wei T'o process uses methoxy magnesium methyl carbonate, or isopropoxy magnesium isopropyl carbonate, and new products are coming out in 2008. Wei T'o is less commonly used for mass deacidification treatment than for single item deacidification. Wei T'o products are available through Wei T'o Associates Inc.(Matteson, USA).

BookKeeper, CSC Booksaver, Papersave and Wei T'o are also available as a hand held sprays.

The Library?of?Congress expected of an ideal mass deacidification treatment in 1994.
neutralize acidic paper and add an alkaline reserve.

produce a pH value between 6.8 and 10.4 which is evenly distributed throughout the book.

should not cause any damage to adhesives, inks or dyes.

should not cause any odor or any change in the color of the paper.

should not cause loss of pliancy or mechanical strength.

Faculty members of the Slovak University of Technology added these further requirements.

the chemicals used have to be safe.

the process has to be able to be applied to any kind of paper.

the process can not cause swelling or warping of the paper.