Oxidation-Reduction Potential (ORP) is one of the most commonly used control parameters in ozone treatment systems. Across municipal water plants, industrial process water systems, aquaculture facilities, and reuse treatment trains, ORP probes are frequently used to regulate ozone dosing and monitor treatment conditions. Despite its widespread use, ORP is often misunderstood. Operators sometimes assume that ORP directly measures ozone concentration in water. In reality, ORP measures something much broader: the overall oxidative strength of the water at a given moment. Understanding the difference between ORP and dissolved ozone concentration is [...]
