Determine Temporary Hardness – In order to set up the correct bypass.
Use a BRITA drop test kit. Check that the test kit is still in date – see side of box (an out of date kit will give an incorrect reading).
The result will determine the bypass setting required on the filter head at installation.
- Place 5ml of mains water into the test tube.
- Add a single drop of the testing solution and gently shake the test tube to ensure the liquids are mixed.
- Continue to add single drops as above until the water in the tube changes to a bright yellow – this is how hard the water is.
Example : One drop = 1 dH Carbonate Hardness,10 drops = 10 dH Carbonate Hardness