Tests tap water & fresh or saltwater aquariums for carbonate hardness (KH). Helps prevent fish stress caused by rapid pH shifts, the result of low levels of KH. Also used to determine the proper dose of pH buffers.
For the determination of the carbonate hardness or the alkalinity in seawater. The carbonate hardness or alkalinity corresponds to the buffer capacity of the aquarium water and therefore determines the stability of the pH-value i...