Hardness Test Kit – NT Labs

Hardness Test Kit – NT Labs

Water Test Kit


Hardness Test Kit : KH, also known as “total alkalinity” or “carbonate hardness”, is a measure of the buffering capacity of the water in your pond. The buffering capacity refers to how well it can resist changes in pH.

Out of stock

How to use Hardness Test Kit ?

  • Ensure the test tube is clean.
  • Take a 5 ml sample of water into the test tube.
  • Take the KH reagent and add one drop, mix and the water sample should turn pale blue.
  • Keep adding drops, one by one (remember to count the drops), mixing between drops, until the blue colour turns to yellow. The number of drops, including the first drop, needed to bring about the colour change is equal to the KH value in dKH. Should the first drop of reagent turn the sample yellow then the KH value is below 1 dKH – this is extremely dangerous for fish.
Weight 0.2 kg


There are no reviews yet.

Be the first to review “Hardness Test Kit – NT Labs”

Your email address will not be published. Required fields are marked *