Red Sea Seawater Refractometer

Red Sea Seawater Refractometer offers exceptional accuracy, for measuring the absolute salinity of seawater at a temperature of 25^oC/77 ⁰F.

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^oC/59 ⁰F rather than 25^oC/77?⁰F. 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^°C/77 ⁰F  ( 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^oC/77^oF, the normal temperature range for reef aquariums
  (most standard refractometers are calibrated at 15^oC/59^oF ).
• Easier to read, higher resolution display, focused to the relevant range for reef aquariums of up to 40 ppt
• Includes Integrated Automatic  Temperature Compensation (ATC) for accurate measurement at standard ambient temperature.

High Accuracy Seawater Refractometer