The Rollei RCS Citro Stop is a universal stop bath that is ideal for both black and white films and photo papers. The citric acid base ensures almost odourless use, making working in the dark room more comfortable. Thanks to the integrated colour indicator, you can always keep track of the activity of the bathroom. The dilution in the ratio of 1 + 19 makes the Citro Stop particularly efficient and durable. Easy and safe to use - perfect for darkroom enthusiasts.