The YSI 6820 V2 is a cost-effective multi-parameter field sampling sonde that is used for profiling and spot-checking in rivers, lakes, wetlands, wells, estuaries, and coastal waters.
Two versions are available from HydroTerra . The 6820 V2-1 multi-parameter field sampling sonde has one optical port, conductivity/temperature port, Rapid Pulse DO port, pH/ORP port, and 3 ISE ports. The 6820 V2-2 field sampling has 2 optical ports, conductivity/temperature port, pH port, and one ISE port. A pressure sensor is an option on both field sampling sondes.
Available optical sensors include ROX optical dissolved oxygen, blue-green algae, chlorophyll, turbidity, or rhodamine.
Additional parameters available include: Temperature, Conductivity, Salinity, Specific Conductance, Depth or Shallow Vented Level, pH, ORP, TDS, Open-channel Flow, Nitrate-nitrogen, Ammonia/Ammonium-nitrogen, or Chloride.