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...
LaMotte Calcium Test Kit Reagent Refill Direct reading Titrator for Calcium Hardness. Range is from 0-200 ppm for freshwater and 0-2580 ppm for saltwater. Color change is from red to blue. Approximately 50 tests. These kits ar...