Hardness (Total & Calcium) Test Kit


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Our Total Hardness kit includes all the equipment & reagents required to measure Total Hardness levels within a range of 0-1200ppm. The kit includes a sample pot and syringe to perform the tests.

Replacement reagents can be bought separately or in Reagent Packs at a discount.

Places to monitor Hardness: Used to measure the hardness content of incoming water, water softeners, cooling towers, boilers and closed systems to help understand the likelihood of scale formation.

Product Data

Reagent Product Code Product Description
TH2 WTPTKTH2 65ml Total Hardness Buffer
TH3 WTPTKTH3 65ml Total Hardness LR Titrant
TH4 WTPTKTH4 65ml Total Hardness HR Titrant
TH5 WTPTKTH3 LR Hardness Titrant
TH4 WTPTKTH5 65ml Total Hardness Indicator
Reagent Pack WTPTK104/TRP All the replacement reagents for Total Hardness Test Kit


Test Kit Content:

  • Durable Hard Case
  • Foam Insert
  • 10ml Syringe (WTPTKC015)
  • 60ml Sample Pot (WTPTKC001)
  • 1 x TH2 Buffer
  • 1 x TH3 LR Titrant
  • 1 x TH4 HR Titrant
  • 1 x TH5 Indicator
  • Instruction Label
  • Bottle Labels
  • Front Label



Our Test Kits can be ordered individually or in bulk. They can be delivered alongside your WTP Chemicals order saving you additional delivery charges. Next working day delivery only £9.96 (up to 20kg); mainland UK only.


More Information

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The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The company shall not be held liable for any damage resulting from handling, contact, mis-use or mis-application of the above product. In all instances the user should satisfy themselves that this product is suitable for the anticipated application and should carry out suitable and sufficient risk/COSHH assessments and a method of use statement.

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