What is the correct sequence of chemical processes in film development?

The correct sequence of chemical processes in film development is developer, stop bath, and fixer bath.

In film processing, the developer is the first step, where the film is immersed in a chemical solution that reduces the exposed silver halide crystals to metallic silver, creating the image. This step is crucial as it determines the contrast and density of the developed film.

Following the developer, the stop bath is used to halt the development process. This is typically an acid solution that neutralizes the alkaline developer, preventing further development and preserving the image that has been formed during the developer stage.

Finally, the fixer bath is employed to remove any unexposed silver halide crystals from the film. This step makes the image on the film stable and light-safe, ensuring that it will not change upon further exposure to light.

This sequence is vital for achieving proper black and white film development, as each step plays a critical role in producing a clear and stable image.