In total darkness (or inside a changing bag), you will open the film cassette, trim the film end and wind it on to the tank reel. The reel is then loaded into the tank and the cover replaced. The lights can be turned on and the film processed through a series of solution baths using the developer, stop bath, and fixer. Once fixed, the film can be removed from the tank, washed. and dried. A fairly simple procedure with attention to the solution temperatures and actual processing times being the most critical for good results.