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In-Situ Rugged Dissolved Oxygen (RDO) PRO-X Probe

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The In-Situ® Rugged Dissolved Oxygen (RDO) PRO-X Probe uses optical technology for measuring dissolved oxygen (DO) in demanding process environments.


  • The U.S. Environmental Protection Agency (EPA) has approved In-Situ RDO methods for use in Clean Water Act programs.
  • The RDO Prox X connects to the In-Situ ConTroll Pro and most dataloggers and SCADA systems. Fixed and detachable cable versions available.


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Frontier Precision provides world-class solutions for a wide variety of industries using leading products, training, technical services and more.

Technical Services


If you require customized technical services and training, please contact Frontier Precision at 800-359-3703 or reach out to a local Frontier Precision location.