• Refractometer for high refractive index samples. Measures refractive index only. • Refractive index measurement range: 1.4700 to 1.8700 nD. Accuracy: ±0.0002. • Measurement temperature range: 5 to 50°C. • Comes with a D line (589 nm) light source. • Digital thermometer range: 0 to 50°C. • LED light source. • Includes a test piece and monobromonapthalene to calibrate for users measuring solid samples. • Dimensions: 13 x 18 x 23 cm. • Weight: 2.5 kg.