CARBONATE HARDNESS KH/Alk PROFI TEST KIT
Calcium alone cannot form the skeletal material of corals and allow calcareous algae to grow. Some other substances are needed as well. A few other constituents are carbonate and bicarbonate. These two substances also have a major impact on the stabilization of the ph in the proper range of 8.1 – 8.4. Such stabilization is also called buffering.
The total carbonate and bicarbonate concentration is also called carbonate alkalinity or carbonate hardness. The only difference between alkalinity and carbonate hardness is a conversion factor.
Nsw has an alkalinity of approx. 2.7 meq/l or approx. 7.5 dkh when expressed as carbonate hardness.
For a stable system the alkalinity or carbonate hardness should have a value similar to nsw or slightly higher and should preferably not fluctuate by more than 5%. This means a maximum fluctuation of 0.14 meq/l or 0.4 dkh.
Therefore an alkalinity test kit should be capable in measuring in steps smaller than 0.14 meq/l.
The Salifert KH/alk test is very straightforward. It measures in sufficient small steps of 0.1 meq/l or 0.3 dkh with a sharp colour change.
The kit can perform approx. 100 - 200 measurements.
-
Product Code:SFT-KH