Latest D-D H2 Ocean Salinity Refractometer

Ensure that your swimming sidekicks stay salty with D-D Seawater Refractometer. This salinity refractometer is calibrated to give true salinity results for seawater. It is engineered for accuracy with copper internal components that conduct heat faster than aluminum. This seawater refractometer is designed to be easy to ready and easy to calibrate. It features automatic temperature compensation for professional-grade performance for you and your deep-sea pals.