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Analytical · Glossary

What is Oxidation Reduction Potential?

Symbol: ORPmVAnalytical

Oxidation reduction potential is the voltage that shows whether a solution tends to oxidise or reduce, measured with a platinum electrode.

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Oxidation Reduction Potential Explained

A noble metal electrode against a reference gives ORP in mV. It is used to control chlorination, dechlorination, cyanide destruction and chromium reduction.

ORP has no simple link to a single concentration, so set points come from process experience.

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Calculators for Oxidation Reduction Potential

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Frequently Asked Questions

What is Oxidation Reduction Potential?

Oxidation reduction potential is the voltage that shows whether a solution tends to oxidise or reduce, measured with a platinum electrode.

How is ORP checked?

With a standard ORP solution of known mV at a stated temperature.

Does pH affect ORP?

Yes, many redox reactions depend on pH.

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