Elos KH Carbonate Hardness Test Kit

Alkalinity is essentially a means of quantifying the stability of pH in a solution, such as aquarium water. It is a measure of the concentration of various negatively charged ionic compounds (anions) such as carbonates, bicarbonates, borate and hydroxides in the aquarium water. If left unchecked, the alkalinity drops below a critical level and pH begins to fluctuate more wildly than is normally suggested (a daily pH shift of +/-0.2 is normal in marine aquaria), causing stress to livestock. In a marine aquarium, the alkalinity should be between 7° and 10° dKH (German carbonate hardness). In a fresh water aquarium it should never drop below 3° dKH.

Elos AquaTestKH makes it possible to quickly determine the buffering capacity of your aquarium water. It is an high quality product that offers high accuracy thanks to several procedures including: calibrated lab droppers with consistent and predefined drops size, NIST (National Institute of Standard and Technology) certified samples to validate reagents and strict stock management to supply to our customers ONLY the fresh test production batch available