The VISOCOLOR® testkits are devided into VISOCOLOR® alpha, ECO and HE. Every product range offering its specific strenght to provide a tailored test for each and every user and application.

• Portable
• Environmentally friendly
• Convenient handling
• Application-oriented measuring ranges

Total hardness or water hardness is defined as the sum of the concentrations of all alkaline earth ions dissolved in an aqueous sample. However, since, strontium and barium ions are contained only in traces and therefore play only a minor role as hardeners, the definition according to the German norm DIN 38409-H 6 was adopted. According to this standard, the hardness is characterized only by the molar concentrations of calcium and magnesium ions in mmol/l.

The term carbonate hardness describes the amount of magnesium and calcium ions for which equivalent molar amounts of hydrogen carbonate are available in the solution.