Normal Use Excessive Use Light Temperature Moisture Contaminates Insects Mold

Pulp paperRag paperPhotos before 1970Black and white photos after 1970Color photos after 1970Film before 1950Film after 1950Acrylic paintingsOil paintingsWatercolor paintingsPastels and charcoalGlass and ceramicsMetalsPlasticsWoodNatural textilesSynthetic textiles

LegendAlmost no riskSome risk, which can be minimizedHigh risk; pay attentionImmediate risk