The secret ingredients of a good coffee. Clean drinking water is an absolute human right, as poor water can be extremely harmful to health. Therefore, when preparing coffee, it is important to pay attention to good water quality and to use only the best ingredients. Good coffee water must have a balanced combination of minerals such as calcium and magnesium. With Brita filter cartridges, you can make your dream of perfect coffee come true. Only with pure water can coffee fully develop its flavor and maintain stable quality. The Purity series is suitable for the Gemini CS 200/220 PRO models with a direct water connection. The usage duration of 4000 liters is about half a year. With Brita Systematic filter technology, the water is softened in just a few steps to achieve optimal results.