VIVREAU Temporary Hardness Water Test Kit

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Test Kit: Temporary Hardness

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The VIVREAU Temporary Water Hardness Test Kit is meticulously crafted to measure calcium carbonate concentration in your water source. Tailored for espresso machines boasting brass or copper boilers, this test provides invaluable insights, confirming the suitability of your water for optimal espresso machine performance.


  • 1 x dropper of testing solution.
  • 1 x measurement beaker.
  • 1 x conversion chart.

How to Test:

  1. Let the water run out of the tap until it is cool.
  2. Fill the measuring tube up to the 5ml mark with tap water.
  3. Add the indicator liquid, drop by drop, swirling regularly and counting drops.
    After the first drop, the water changes to purple.
  4. Keep adding drops until the color changes from purple to yellow and is stable; the measurement is finished.


In the world of coffee, where every drop influences the flavor, aroma, and quality of your brew, VIVREAU shines as a symbol of unparalleled water filtration excellence. Transforming the way you experience your daily coffee ritual, VIVREAU water filters epitomize top-tier quality, groundbreaking innovation, and a steadfast commitment to elevating both your coffee and your dedication to a healthier, sustainable lifestyle.

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Attention CA Residents: Prop 65 Warning

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to

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