BM-03 sugar refractometer is an automatic digital instrument that can measure the sugar content of aqueous solutions. It only requires a few drops from the drinks, food, or juice from the fruits and vegetables. Applications: Use for Brix of sugar-containing solutions, refractive index fast test. It can be used throughout the food, agricultural, chemical and manufacturing industries. Usage field : Sugar production, beverages, agricultural production, industrial production, scientific research, etc. Features: * High definition digital meter, automatic fast reading; * Automatic temperature compensation, decreasing measurement errors; * Original imported chip; High light-transmission prism, high accuracy; * Water-proof; IP65 rated rugged design; * USB direct charge, eco-friendly & durable; * Light-weight & portable; convenient for on-site measurement of various juices or sugar-contained liquid. Measurement Procedure: 1. Long press the power button; 2. Drop the liquid sample into the sample tank, at least half of the tank (≥0.3ml); 3. Press the measurement button to get data within 5 seconds; 4. Clean the sample tank before next measurement.