The De’Longhi filter cartridge is designed to optimise the water quality used by coffee machines. Features – It helps improve machine performance and efficiency because prevents limescale build-ups inside the coffee machine. – Cleaner water helps to obtain a better tasting coffee and to preserve its original aroma. – It helps to extend the life of the coffee machine. – It’s quick and easy to install. – For optimal results we reccomend to change the filter regularly, and at least every 2 months. Perfect for the below products: PRIMADONNA ELITE ECAM 650.75.MS PRIMADONNA EXCLUSIVE ESAM 6900.M ELETTA CAPPUCCINO TOP ECAM 45.760.W PRIMADONNA AVANT ESAM 6750 PRIMADONNA ESAM 6600 ECAM 23.460.S ECAM 23.210.W Magnifica ESAM 4500 Magnifica ESAM 3500 Dedica Style Pump Espresso Black EC685.BK Dedica Style Pump Espresso Metallic EC685.M Icona ECO ECO 311.BK Icona ECO 311.W