Mould can develop within 48-72 hours in an environment where the temperature is over 24C/75F and the relative humidity is over 60%.
Growth can be controlled through the stabilization of the environment (temperature and humidity). Keep the air in the region circulating.
Remove items from the general area and treat with a conservator's assistance.
Do not attempt to remove mould from wet/damp paper.This will increase the probability of mould spores becoming embedded into the paper fibres.
Mould is easier to remove when the document is dry. Vacuum or brush it off and remove the spores from the area.
If possible, professional fungicidal fogging of the area is recommended.
Materials that will be fumigated should be removed from plastic crates, as plastic will absorb the fumigants.
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