... Turbidity Meter, Colorimeter, Gloss Meter, Tintometer, Automatic Polarimeter, Auto Melting Point Apparatus, Automatic Refractometer, Abbe Refractometer, PH/ ... the meter will calibrated automatically.2.Auto-Ranging for Conductivity:The meter with auto-ranging function when measure conductivity. ... will fast response and convert range.3.Auto Temperature Compensation:DDS-12DW will recognize the temperature ...