Where are ORP measurements used?
ORP measurements are often used to monitor destruction of contaminants in many processes. Common applications are chlorine control in cooling towers, aeration control in wastewater, destruction of cyanide in metals and mining, and complete removal of harmful chemicals through wet gas scrubbing.
What is ORP?
ORP or oxidation reduction potential is the measurement of the ability of a chemical substance to either oxidize or reduce another chemical substance. The measurement is made in mV (millivolts) with oxidizers having a positive (+) ORP value and reducers having a negative (-) ORP value.
Are ORP and Redox the same?
Yes, both terms are interchangeable and refer to the same measurement. ORP stands for Oxidation Reduction Potential while Redox stands for reduction/oxidation.
Does M4 Knick offer a sensor that measures both pH and ORP?
Yes, many ORP applications also have a pH measurement incorporated. M4 Knick offers two sensors which provide simultaneous pH and ORP measurements from one electrode. The
SE 554 AMNS and
PL-PETR provide both cost and space savings.
How do I calibrate my ORP sensor?
ORP sensors calibrating using a known standard (example: 220 mV REDOX Buffer) or validated process value. Immerse the sensor in the standard and adjusts the displayed value.
Are ORP measurements temperature compensated?
No, temperature affects ORP measurements but they are NOT corrected for it. An ORP value simply reflects the ability of whatever is in the water to oxidize whatever contaminants are in the water.
