... , Visible Spectrophotometer, Flame Photometer, Whiteness Meter, Turbidity Meter, Colorimeter, Gloss Meter, Tintometer, Automatic Polarimeter, Auto Melting ... 30.Single Point Push-Button Calibration:TDSscan series with one point calibration function. Themeter is permitted ... to use TDS standard solution, you need only set known TDS value in the meter ...