Film Developing Chemicals
Developing film is nothing more than a series of chemicals. The only thing that varies is how long you leave the chemicals in the tank. Primarily these are some chemicals required to develop films: Developer, Stop Bath, Fixer and Photo-flo(optional). While the image has been captured on the film, it is not visible until the developer brings out the silver halides in the film. While the developer will bring out the image captured on the film, it will continue to develop the picture until it is stopped. This will ruin the film, and is what is referred to as overexposure. The photographic fixer is the final process in developing the film. The fixer "fixes" the image in place by removing the unexposed silver halides in the film.