... 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 ...