... , UV Vis Spectrophotometer, Visible Spectrophotometer, Flame Photometer, Whiteness Meter, Turbidity Meter, Colorimeter, Gloss Meter, Tintometer, Automatic Polarimeter, Auto Melting Point Apparatus, Automatic ... stop. Adaptive PID controller precisely control the temperature and humidity, prevent temperature soaring,keep working room temperature stable and uniformity. User password protection,built-in ...