6600 V2 Most Comprehensive Optical Monitoring System Available 
Designed for in situ monitoring and profiling, the YSI 6600 V2 is ideal for long-term deployments requiring the most complete data record. Two versions are available:
The 6600 V2-4 with - 4 optical ports
- Conductivity/temperature port
- pH or pH/ORP port (NEW wiped sensor available)
and the 6600 V2-2 with
- Two optical ports
- Conductivity/temperature port
- Rapid Pulse DO port
- pH or pH/ORP port
- 3 ISE ports
A pressure sensor is an option on both versions. Available optical sensors include ROX optical dissolved oxygen, blue-green algae, chlorophyll, turbidity, or rhodamine. The 6600 V2 will log all parameters at programmable intervals and store up to 150,000 data sets. Additional parameters include: - Salinity
- Specific Conductance
- Depth or Shallow Vented Level
- TDS
- Open-channel Flow
- Nitrate-nitrogen, Ammonia/Ammonium-nitrogen, or Chloride
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