The drk8066 automatic polarimeter is a new product developed by our factory. Its characteristic is to use a high-efficiency LED lamp with a lifespan of more than 5000h as the light source, instead of the short-life, easily damaged sodium lamp and the high-temperature halogen tungsten lamp. This greatly eliminates the user's inconvenience in use due to frequent replacement of the sodium lamp. Another feature of the instrument is that the temperature of the sample chamber can be kept consistent with the ambient temperature, avoiding errors and inconveniences caused by the temperature rise of the sample chamber. It has four test modes of optical rotation, specific rotation, concentration, and sugar content. It can automatically repeat the measurement 6 times and calculate the average value and root mean square. It can display sample temperature and can measure dark samples. 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: ±45° (optical rotation) ±120°Z (sugar content) Minimum reading: 0.001° (optical rotation) 0.01°Z (bracity) Indication error: ±0.01°(-15°≤optical rotation ≤＋15°) ±0.02° (when optical rotation <-15° or optical rotation> + 15°) Repeatability (standard deviation δ): 0.002° (optical rotation) Display mode: large-screen color dot matrix LCD display Test tube: 200 mm, 100mm The lowest transmittance of measurable samples: l% Output communication interface: USB and RS232 Power supply: 220V ±22V, 50 Hz ±1 Hz Instrument size: 718mm ×342mm ×230mm Net weight of the instrument: 32kg Instrument level: 0.02 level