Jura 7520 Claris Water Care Cartridge
The Claris Water Cartridge reduces water hardness up to 75% and eliminates decalcifying.  It removes (if present) up to 85% Chlorine, up to 90% lead, up to 95% copper and up to 67% aluminum.  Fits Jura/Capresso models C1000, C3000, F9, S7, S8, S9.