A
Hardness testing
– Before installation: Test your water hardness with the Total Hardness Test Kit as described
below, to determine the expected cartridge lifespan.
– After installation/In use: to test if your Scale Control R works optimally, compare the water
hardness of the cold mains to the water hardness of the Quooker boiling water.
Please note: allow the water to cool before testing, the second value should be lower.
1
30
ml
25
20
15
10
5
3
30
ml
25
20
15
10
5
+ + ... = °dH
2
30
ml
25
20
15
10
5
7
1. Filling test tube
Rinse the test tube with water from the
cold mains water feed. Then take a water
sample by filling the test tube to the 5 ml
mark.
2. Adding reagent
Add the reagent drop by drop to the
water sample. Gently swirl the test tube
after each drop. Count the number of
drops needed to change the colour of
the water sample to red.
3. Determining water hardness
One drop of the reagent is the equivalent
to 1.0°dH (degree of hardness) – For
example, if it takes 9 drops for the sample
to turn to red, this means your water has
a water hardness of 9.0° dH.