Water Hardness Test Strips (3-Pack)

Water Hardness Test Strips — the simplest way to protect your espresso machine from scale damage. Each strip measures total water hardness (calcium + magnesium) in 30 seconds. Ideal range for espresso equipment: 50–100 ppm. Pack of 3.

• Pack of 3 test strips
• Results in 30 seconds
• Ideal espresso range: 50–100 ppm
• Recommend retesting every 3 months