... Turbidity Meter, Colorimeter, Gloss Meter, Tintometer, Automatic Polarimeter, Auto Melting Point Apparatus, Automatic Refractometer, Abbe Refractometer, PH/DDS/TDS ... for sodium lamp in order to lengthen the service life of the light power (more than 2000 hours ... specific rotation, optical rotation, sugar degree and concentration.² Automatic repetition-measurement for 6 times, and calculation of average ...