Oakton Instruments WD-35425-50 Replacement pH/Conductivity/TDS/Salinity Sensor Module

Innovating Science - pH Buffer Calibration Kit - 16.9oz (500mL) of each pH 4, 7, 10 and 4oz. (120mL) of Potassium Chloride

Oakton PCTestr 35 Waterproof Multiparameter Tester, For pH, Conductivity and Temperature, 0.0 to 14.0 pH Range

Oakton WD-00653-18 Conductivity Standard Calibration Solution, 1413 microsecond, 1 Pint Bottle

Oakton WD-35425-10 PCSTestr 35 Waterproof Multiparameter Tester for pH, Conductivity, TDS, Salinity and Temperature, 0.0 to 14.0 pH Range