DUAL-SCALE SEAWATER REFRACTOMETER: The salinity refractometer features a dual scale, measuring specific gravity (1.01.070) and salinity (0100), allowing for two different readings from a single test.

AUTOMATIC TEMPERATURE COMPENSATION (ATC): These optical refractometers are fully equipped with ATC (Automatic Temperature Compensation); they automatically adjust for changes in ambient temperature while ensuring accurate results.

EASY TO USE AND DURABLE: This salinity refractometer features ATC and is lightweight, constructed from high-quality aluminum and rubber.
After calibration, simply place 23 drops of the sample solution onto the prism, hold it up to the light, and take accurate readings.

WIDE APPLICATION: A portable handheld refractometer for measuring sodium chloride content in high-concentration saline liquids, such as brine and certain industrial fluids.
This salinity measuring instrument is suitable for use with seawater, aquariums, artificial seawater, mariculture, fisheries, agriculture, and laboratory experiments.