Spray System

The Spray System consists in a 7.5 liter pressurized tank and a spray nozzle. An air compressor has to be added. It is ideal for the treatment of oversized documents. Bookkeeper refills are available in 5.67kg containers. The system is easy-to-use and is an economical way to treat documents, maps and collections containing a large number of oversized items. Bookkeeper products are non-toxic, non-hazardous and contains no CFC’s and no solvents. The product is non-clogging, almost odor-free and dry in few minutes.

Bookkeeper Deacidification Process

The buffer materials are microscopic particles of an alkaline compound (magnesium oxide). The particles are dispersed and suspended in an inert liquid material (a blend of non-toxic fluorinated materials).

This dispersion can be applied by dipping or spraying. In contact with paper, the alkaline particles attach and blend with the paper structure, and the inert liquid simply evaporates.

Because the formula contains no water, the liquid does not cause the paper fibers to swell or make the paper “wet,” and it will not cockle or stiffen from the application.

Over the first few weeks following treatment, the magnesium oxide particles combine with moisture in the air to form magnesium hydroxide, also a non-toxic alkaline buffer. These buffer particles readily absorb and neutralize the acids in the paper. The material continues to absorb acid over the life of the paper. This is a permanent treatment that should not need to be repeated under normal storage conditions.