Film materials should be stored in interior rooms away from exterior walls and places that do not have extreme temperature fluctuations. Furthermore, film materials should not be stored near sources of heat (sunlight, radiators, heaters), water (bathrooms, sprinklers), or near chemical or exhaust fumes. Storage environments should be regularly monitored to check temperature and humidity controls, HVAC systems, and pest-free. Quantities of nitrate film in excess of 25 pounds are subject to storage and handling standards prescribed by the National Fire Protection Association (NFPA).
Seriously deteriorated negatives of any type should be isolated from those in good condition.