Carbonate Hardness Test Kit

Carbonate Hardness Test Kit


In stock

Water Filters & Softeners




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.

How-To Use the Carbonate Test Kit

  1. Fill the measuring vial (the clear tube pictured above) with the water you intend on using in your espresso machine.
  2. Fill to the 5 ml mark on the vial
  3. Add the Mavea solution a drop at a time (counting each), gently mixing by swirling the vial after each drop
  4. Once the color changes from purple to yellow stop adding the solution
  5. 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.
We fulfill orders Monday through Friday from our warehouse in Latham, NY. Orders may take anywhere from 1-3 business days to be fully processed and shipped out. We use USPS or UPS as our preferred carriers. Orders over $50 are eligible for FREE shipping within the contiguous U.S., and we reserve the right to select which carrier to use based on cost and speed in which the package will arrive to the final destination. Orders over $250 will require a signature for delivery. If however, you would like to waive this additional insurance, please fill out the form here and by doing so you agree to the terms and conditions contained within. Please save all packaging for any future reasons for shipping including returns, exchanges, and repairs. All exchanges & returns must be recieved within 30 days of the ship date. A return can be initiated by contacting a Chris' Coffee customer service representative here.

Commercial equipment & coffee are NOT eligible for returns or exchanges.

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Please Note: Chris' Coffee will not be responsible for any delivery delays due to unforeseen circumstances outside our reasonable control such as delays due to severe weather, natural disasters, strikes, etc.

For any questions or concerns please email support@chriscoffee.com