MAINTAINING A SUITABLE ENVIRONMENT
Photographic materials require a cool, dry, well-ventilated storage environment. High temperature and relative humidity increase deterioration and promote the growth of mould and mildew, which could mar surfaces and break down binder layers. Avoid storing photographs in the attic, the basement, or along the outside walls of a building, where environmental conditions are more prone to extremes and fluctuations and where condensation may occur. In some storage situations, seasonal adjustments such as dehumidifiers in the summer or fans to promote air circulation may be necessary to improve problematic environmental conditions.
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