Thermo Products 9678BNWP manual Electrode Measurements, Direct Measurements

Electrode Measurements

Direct Measurements

Direct oxidation-reduction potential (ORP) measurements can be used to determine the oxidizing or reducing capability of a solution and are commonly made in polluted streams, chlorinated waters, industrial wastewaters and other water samples.

1.Prepare the electrode according to the Electrode Preparation section.

2.Set the meter to the millivolt, relative millivolt or EH measurement mode.

3.Place the electrode into the sample solution.

4.When the reading stabilizes, record the displayed mV potential and temperature.

Note: Platinum redox electrodes may give unstable readings in solutions that contain chromous, vanadous and titanous ions or other ions that are stronger reducing agents than hydrogen or platinum.

Redox/ORP Electrode User Guide