Seawater Refractometer Calibrated for accurate sea-water salinity measurement o Calibrated for Seawater (NSW). Measuring the salinity of seawater with a standard refractometer calibrated for brine (NaCl) solution will result in a deviation of up to 1.5 ppt. o Calibrated at 25oC, the normal temperature range for reef aquariums.
Ensures an accurate measurement of absolute salinity and conversion to Speci c Gravity (Standard refractometers are calibrated at 15oC). o Easy to read, high resolution display focused to the relevant range for reef aquariums of up to 40ppt. o Includes Integrated Automatic Temperature Compensation (ATC) for accurate measurement at any ambient temperature.