Mavea Water Hardness Test Kit

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Product details

Management number	248441557	Release Date	2026/09/03	List Price	$11.60	Model Number	248441557
Category	Coffee Accessories Cleaning Tool

The Mavea temporary hardness test kit is an incredibly accurate way of testing carbonate hardness of your water. It's a very easy test kit intended to prevent scale build-up in your machine by accurately monitoring water quality or hardness. We recommend a hardness of 3 grains.

Fill the measuring vial (the clear tube pictured above) with the water you intend on using in your espresso machine.
Fill to the 5 ml mark on the vial
Add the Mavea solution a drop at a time (counting each), gently mixing by swirling the vial after each drop
Once the color changes from purple to yellow stop adding the solution
Count the total number of drops used. Each drop is equal to 1 grains per US gallon. Example: You used 4 drops in the vial of 5 ml of water and the color changed. The grains per gallon would be 4.