Electrical Conductivity (EC)
Hanna Instruments HI9811-5 Portable pH/EC/TDS/Temperature Meter
Electrical Conductivity (EC)
Hanna Instruments HI9813-6 Portable pH/EC/TDS/Temperature Meter with CAL Check™
Electrical Conductivity (EC)
Hanna Instruments HI98195 Multiparameter pH/ORP/EC/Pressure/Temperature Waterproof Meter
Dissolved Oxygen (DO)
Hanna Instruments HI98196 Multiparameter pH/ORP/DO/Pressure/Temperature Waterproof Meter
Oxidation-Reduction Potential (ORP)
Hanna Instruments HI991003 Waterproof Portable pH/pH-mV/ORP/Temperature Meter with Sensor Check™