High Accuracy Seawater Refractometer

Red Seas Seawater Refractometer offers exceptional accuracy, for measuring the absolute salinity of seawater at a temperature of 25 degrees C.

Most refractometers used within the aquarium hobby are not specifically designed for reef aquariums and use an algorithm for the measurement of brine, NaCl, rather than seawater, and at a temperature of 15 degrees C rather than 25 degrees C. Thus, a measurement deviation of up to 1.5ppt is possible, which can have a significant adverse effect on coral growth and coloration.

Main features of Red Sea Seawater Refractometer include

Directly reads the absolute salinity of seawater at 25 degrees C. No need for seawater or temperature compensation factors.
Specifically designed for the ionic content of seawater NSW for more accurate salinity measurement, industry standard refractometers are calibrated for salt brine.
Calibrated for seawater NSW at 25 degrees C, the normal temperature range for reef aquariums, most standard refractometers are calibrated at 15 degrees C.
Easier to read, higher resolution display, focussed to the relevant range for reef aquariums of up to 40ppt
Includes Integrated Automatic Temperature Compensation for accurate measurement at standard ambient temperature.