... Turbidity Meter, Colorimeter, Gloss Meter, Tintometer, Automatic Polarimeter, Auto Melting Point Apparatus, Automatic Refractometer, Abbe Refractometer, PH/DDS/ ... WZZ-2A built-in auto-controlling system. Power on the polarimeter, the system will search for zero point automatically. ... polarimeter will display the angle of rotation.Auto-judge substance form levorotatory or dextrorotatory:The polarimeter ...