Benchtop Digital Refractometer NBDR-200 is equipped with color LCD touch screen display and user-friendly RS232 interface. The unit has measurement range of 1.3 to 1.7 nD and temperature range of 0 to 50 ℃. Designed with automatic correction of the effect of temperature on the brix. Features LED light source with high stability. Made with optical structure that improves measuring accuracy."