... Colorimeter, Gloss Meter, Tintometer, Automatic Polarimeter, Auto Melting Point Apparatus, Automatic Refractometer, Abbe Refractometer, PH/DDS/TDS Meter ... the TDSscan10, 20 and 30.Single Point Push-Button Calibration:TDSscan series with one point calibration function. Themeter is ... Temp.0-60°CPower Requirement3×1.5V alkaline button cell batteriesBattery LifeApprox. 150 hoursDimension & Weight180(L)mm× ...