1.Digital Refractometer 2.Refractive index Measuring range ... Meter, Colorimeter, Gloss Meter, Tintometer, Automatic Polarimeter, Auto Melting Point Apparatus, Automatic Refractometer, Abbe Refractometer, PH/DDS/TDS ... Meter, etc.Application:A620/A650 Automatic Refractometer includes high-performance CCD light-sensitive part,can ... 30°C0-50°CPower supply22OV, 50Hz Digital Refractometer (AE-A610)