RED SEA SEAWATER REFRACTOMETERRegular price £49.99
Red Sea seawater refractometer
Integrated automatic temperature compensation
Red Sea 'Reef Spec' guarantee
Red Sea's seawater refractometer is specifically designed to measure absolute salinty of seawater for reef aquariums. Calibrated for seawater. Measuring the salinity of seawater with a standard refractometer calibrated for brine (NaCl) solution will result in a deviation of up to 1.5ppt.