Warm temperatures and high relative humidity accelerate harmful chemical reactions, softening the emulsion and causing it to stick to other surfaces. Avoid storing in attics, basements, outbuildings, and places around water pipes. Such areas encourage the growth of mold and mildew which feed on the gelatin emulsion. Any light can fade the photographic image. Avoid food and drink while handling materials.
Spillage damages the materials and also attracts insects and rodents.
Avoid dirt, dust, and common air pollutants, including carbon monoxide and sulfur. Do not store in garage area. Avoid cardboard, wooden boxes, and wooden frames. Store and frame in acid-free, unbuffered, chemically inert materials. Although more expensive, these keep your items as stable as possible.