Water Quality System (WQS)
Field & Laboratory Meters
  • pH, SCT, DO & BOD, Multi-parameter Testing
Environmental Monitoring Systems (EMS)
Multi-parameter Water Quality Sondes
  • Sampling, Logging& Profiling

Integrated Systems & Services (ISS)
Environmental Monitoring Modules
  • Buoy& Floating Platforms, Profiling Systems, EcoMapper AUV

EMS_6 Series and EXO Water Quality Sondes

ROX® Optical Dissolved Oxygen Sensor


ROX® Optical Dissolved Oxygen Sensor
Extend Deployment with this Reliable Dissolved Oxygen Probe

Utilizing a luminescent technique to detect dissolved oxygen, the ROX sensor is the most powerful tool for making long-term oxygen measurements in severe fouling and low oxygen environments.
The ROX sensor meets the requirements of ASTM International Method D888-05, Test Method C; however, the US EPA has not yet approved this method for compliance monitoring or BOD measurements.

The YSI 6150 ROX Optical Dissolved Oxygen probe has a rugged design and a large measurement range which makes it ideal for water quality monitoring, sampling, flow cell, and ground water measurements.

This sensor is available for use on the following sondes:

  • 600OMS V2
  • 6820 V2 & 6920 V2
  • 6600 V2 & 6600EDS V2
  • 600XL V2 & 600XLM V2

ROX Optical DO Specifications
Dissolved Oxygen, % Specifications
Range: 0 to 500%
Resolution: 0.1%
0 to 200%: ±1% of reading or 1% air saturation, whichever is greater
200 to 500%: ±15% of reading

Dissolved Oxygen, mg/L Specifications
Range: 0 to 50 mg/L
Resolution: 0.01 mg/L
0 to 20 mg/L: ±0.1 mg/L or 1% of reading, whichever is greater
20 to 50 mg/L: ±15% of reading

Improving on YSI's commitment to supplying our customers with relevant calibration and QA/QC data, each ROX sensor is shipped with full-range factory calibration coefficients to ensure excellent sensor accuracy.

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