Benchtop multiparameter water quality meter with a 7-inch touchscreen. All three models share one platform - pH -2.00 to 20.00 (accuracy 0.01 pH), ORP -1999.9 to +1999.9 mV, conductivity 0-200.0 mS/cm, dissolved oxygen 0.00-20.00 mg/L and temperature 0.0-100 C - and differ in their primary measurement focus (pH, dissolved oxygen or conductivity). Stores 500 readings per parameter; protection class IP54. Package 57x40x9.5 cm, 3.3 kg. Per-model details are listed in the comparison table below.