HI783 Marine Magnesium handheld checker is designed to determine the concentration of magnesium in saltwater aquariums.
HI783 features a single-button operation system and is easy to use.
The large LCD is easy to read and the auto shut-off feature assures the battery will not be drained.

Specifications
Range 1000 to 1800 ppm Magnesium
Resolution 5 ppm
Accuracy ±5% of reading @ 25 °C (77 °F)
Light source Light Emitting Diode @ 610 nm
Light detector Silicon photocell
Method
Adaptation of the colorimetric EDTA method using
calmagite indicator. The reaction between magnesium and
the reagents causes a blue to violet tint in the sample.
Environment
0 to 50 °C (32 to 122 °F); max. 95% RH non-condensing
Prepared sample cuvette (sample plus reagents) must be
18 to 28 °C (64 to 82 °F).*
Battery type 1.5V AAA Alkaline
Auto shut-off After 10 minutes of non-use
Dimensions 86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5”)
Weight 64 g (2.3 oz)
Interferences – Calcium below 300 ppm and above 500ppm