Keep your espresso machine running like new. This is a 100% Genuine De'Longhi Water Hardness Tester Strip (Part Number: 5532110300). Essential for checking your local water quality to properly program your coffee machine's descaling frequency and prevent catastrophic limescale buildup. 

• Genuine OEM De'Longhi factory replacement part

• Quick, accurate reading within seconds

• Universal cross-compatibility (Also fits many Bosch, Siemens, & Miele machines)

• Fast & Free Shipping available!