Conductivity Range 0.00 to 4.00 mS/ cm ( dS/ m) * Conductivity Resolution 0.01 mS/ cm Conductivity Accuracy  ± 0.05 mS/ cm ( 0.00 to 2.00 mS/ cm) ,  ± 0.30 mS/ cm ( 2.00 to 4.00 mS/ cm) ....
Light Source up to 5 tungsten lamps with different narrow band interference filters. Light Detector silicon photocell Power Supply external 12 VDC power adapter or built-in rechargeable....
pH Range -2.00 to 16.00 pH pH Resolution 0.01 pH pH Accuracy  ± 0.02 pH pH Calibration automatic, at one or two points with two sets of standard buffers ( pH 4.01 / 7.01 / 10.01 or pH 4.01....