I found the instructions tricky, as there are different scales for all the countries
Basically take 5ml of water and drop green liquid into it while swirling.
Water will go red at first and then as you add drops turn green.
More drops harder water.
0-4 drops bdfore a change back to green = soft. 9-12 hard.
Негізгі бет Quooker water hardness drop test. Time to replace scale cartridge.?
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