The drk8068 automatic polarimeter uses light-emitting diodes as the light source, avoiding the trouble of frequent replacement of sodium lamps. The test range of SGW®-3 is up to ±89° (optical rotation). The semiconductor Peltier device has heating and cooling functions. If a temperature-controlled test tube is used, the temperature of the sample can be controlled and measured. The large-screen touch LCD on the instrument provides a WINDOWS operation interface, which is simple, intuitive, stable and reliable. The main technical parameters Measurement mode: optical rotation, specific rotation, concentration, sugar content Light source: LED + high-precision interference filter Working wavelength: 589nm (sodium D spectrum) Measuring range: ±89°(optical rotation) ±257°Z(bracity) Minimum reading: 0.001° (optical rotation) Indication error: ±0.01°(﹣15°≤optical rotation ≤+15°) ±0.02° (when the optical rotation is less than 15° or when the optical rotation is greater than +15°) Repeatability (standard deviation s): 0.002° (optical rotation) Temperature control range: 15℃-30℃ Temperature control accuracy: ±0.5℃ Display mode: 7-inch color dot matrix LCD touch screen display Test tube: 200mm, 100mm common type, 100mm temperature control type The lowest light transmittance of the measurable sample: 1% Output communication interface: USB interface Data storage: 1500 sets of data U disk export: picture or data format file Power supply: 220V±22V, 50Hz±1Hz, 250W Instrument size: 710mm×365mm×235mm Net weight of the instrument: 36kg