Flic Film Low Odour Stop Bath is a citric acid stop bath which stops further development of film when used as part of a standard development, stop and fix process. Using a stop bath neutralizes the developer which definitively sets the development time and prolongs the life of the fixer. Comes in a 200gram bottle. Mixed 20g (3.5 teaspoons) to a litre, one bottle will make 10 litres of stop bath. Each litre has a capacity of 12 rolls of film for a total package capacity of 120 rolls of film.