This handheld digital salinity refractometer delivers ultra-precise salt measurement with a full 0–28% measuring range and fine 0.1% resolution, eliminating visual reading errors from traditional analog testers. Equipped with built-in ATC automatic temperature compensation, it automatically offsets temperature fluctuations to deliver stable, repeatable readings within seconds after dripping tiny liquid samples onto the corrosion-resistant stainless steel prism.

The backlit high-definition LCD screen simultaneously displays salinity value and real-time liquid temperature, readable clearly in dim light workshops or outdoor aquaculture sites. Its lightweight compact aluminum body with anti-slip rubber grip supports one-handed portable testing, easy to rinse and wipe clean after each measurement.

Widely applied for marine aquariums, seawater farming, brine pickling, sauce processing and food factory QC inspection. It comes with matched calibration tools and a shockproof protective storage case to shield optical components against scratches and collision, a reliable precision testing tool for aquarists, food processors and lab operators.