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FacsimileA reproduction or copy of an original work that is similar
in appearance to the original.
Fore edgeThe front edge of a book; the edge of a book that opens; the
side opposite the spine.
Form / formatThe physical medium in which information is recorded or
carried - paper, microfilm, photograph, computer disc, machine- readable
record.
FoxingDiscolouration on paper, generally in the form of random rust
coloured spots. Believed to be caused by one or more of the following; fungus
or mould, impurities in manufacture, high humidity or dampness,
airborne acids. The removal of foxing is not generally recommended in
library and archive preservation since methods of removing foxing almost
always will cause further damage to the object.
Freeze drying (vacuum)A method of removing water from wet books or other
material. The material is first frozen and then placed in a high vacuum,
so that the water (ice) vaporises in the vacuum (sublimes) without passing
through the liquid state.
FumigationThe exposure of materials to the vapour of a volatile substance
or toxic chemical in a closed container or chamber in order to destroy
fungi and/or insects or animal pests.
Fungus / fungi / mouldFungi are types of microscopic plant materials
that are very numerous and occur in many different forms. Their spores,
or reproductive bodies are everywhere and await only proper conditions
of moisture and temperature to germinate, grow and reproduce. Fungi cause
staining and weakening of most library and archive materials. Keeping
the relative humidity below 70-80% and providing good air movement is
the best way to control the growth of mould.
FungicideA substance capable of destroying or preventing the growth
of fungi. Fungicides do not provide any residual protection from future
mould growth.
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