Serenity Refractometer

Maintain precise salinity levels with the Serenity Seawater Refractometer, an essential tool for marine aquarium success. This high-precision instrument delivers accurate readings across 0–100 ppt and 1.000–1.070 specific gravity, with automatic temperature compensation to eliminate manual adjustments. Quick calibration using distilled water takes seconds, while the adjustable focus eyepiece ensures clear, reliable measurements every time. Built for durability and ease of use, it includes a protective carry case, pipette, and calibration screwdriver—everything you need to keep your fish and corals thriving in optimal conditions.