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HI98199 Multiparameter pH/Conductivity/Dissolved Oxygen Meter with pH Probe. Optional DO and EC electrodes are available.
With HI7698194/4 probe and 4m cable
HI98198 Optical Dissolved Oxygen Meter
HI98194 Multiparameter pH/ORP/EC/TDS/Salinity/DO/Pressure/ Temperature Waterproof Meter with HI7698194/4 probe and 4m cable
The HI9829 Multiparameter Meter is a waterproof meter for pH, mV, ORP, DO, EC, resistivity, TDS, salinity, air pressure, turbidity, temperature and GPS.
The HI83399 is a compact, multi-parameter photometer for measuring the most important parameters of the quality of water and waste water.