Salifert Boron Test Kit for measuring the boron content in seawater
Boron is very important in marine aquariums. Too low a concentration can slow down the growth of corals and lime algae and too high a concentration can result in a hoping of boric acid, which can act as a bactericide and kills essential bacteria.
The concentration in natural seawater is quite low, namely between 4.4 mg / L and 4.8 mg / L.
Enough for 25 tests.
(recommended for the DSR method)