From water experts for coffee experts. Drinking water is strictly regulated in our Western world. Nevertheless, it makes sense to optimize this water for coffee preparation in terms of both quality and functionality. Ideal coffee water requires a balanced content of minerals such as calcium and magnesium, sufficient total hardness, and a necessary low level of carbonate hardness. Only then can the coffee fully develop its aroma, the crema remains stable, and additional ingredients like milk or cream can distribute evenly. The Purity series is suitable for the GEMINI models CS 200/220 PRO with a fixed water connection. Usable for 3,400 liters over approximately 12 months. Price per piece.