... Vis Spectrophotometer, Visible Spectrophotometer, Flame Photometer, Whiteness Meter, Turbidity Meter, Colorimeter, Gloss Meter, Tintometer, Automatic Polarimeter, Auto Melting Point ... solution and press ENTER key, then the meter will be calibrated automatically.Auto-Buffer Recognition:In ... After calibration, the meter will indicate electrode slope,you can judge by the indicator to replace electrode ...