The drk6616 automatic Abbe refractometer is an instrument that can measure the refractive index nD of transparent and translucent liquids and the mass fraction (Brix) of sugar solutions. It has a friendly operation interface, automatic measurement, fast test speed, good repeatability, temperature correction function, compact size, data storage and printing functions. The main technical parameters: Refractive index measurement range (nD): 1.30000-1.70000 Measurement error (nD): ±0.0002 Measurement resolution (nD) 0.00001 The mass fraction of sucrose solution (Brix) reading range: 0-95% Measurement error (Brix): ±0.1% Measurement resolution (Brix): 0.1% Temperature display range: 0-50℃ Instrument volume: 329mm×214mm×150mm Power supply: 220V~240V, frequency 50Hz±1Hz Instrument quality: 3kg Output interface: RS232 Operating temperature range: room temperature~35℃