Films—such as x-rays and negatives—are sensitive to temperatures, relative humidity levels and water. X-rays have a base, or plastic backing, and emulsion. The emulsion toughens under light and makes the image more durable. Unlike true emulsions, those used for films are a suspension of solid particles in a gelatin solution. When a medical facility suffers water damage that affects films, x-ray restoration is critical to preserving valuable patient information.