Usually delivered in 2-4 days
•   Measurement range: Ca 300 – 498 mg/l (ppm)
•   Measurement range: Mg 820 – 1800 mg/l (ppm)
•   Accuracy: Ca 4 mg/l
•   Accuracy: Mg 20 mg/l
•   For determining the Ca and Mg concentration in saltwater aquaria
•   Sufficient for approximately 50 applications