Benchtop
Digital pH Meter, Benchtop, ±0.01 pH
- Reads
- pH · mV · ORP · °C
- mV
- 0 to +1999 mV
- ORP
- Electrode at extra cost
- Home
- Parameters
- mV and ORP
mV and ORP (Redox) Measurement
ORP, the oxidation-reduction potential, shows whether water is oxidising or reducing, read in millivolts (mV). Every Hintron pH meter with a mV mode reads it directly. An ORP electrode is required and is supplied at extra cost.
- Range
- 0 – ±1999 mV
- Resolution
- 1 mV
- Accuracy
- ±1 mV
- Electrode
- ORP, extra cost
Instruments
All parameters →Recommended instruments
Benchtop
Microcontroller pH, mV and Temperature Meter, 3-Point Calibration, ±0.01 pH
- Reads
- pH · mV · ORP · °C
- mV
- 0 to ±1999 mV
- ORP
- Electrode at extra cost
Benchtop
Microprocessor pH, mV and Temperature Meter, Data Logging, ±0.01 pH
- Reads
- pH · mV · ORP · °C
- mV
- 0 to +1999 mV
- ORP
- Electrode at extra cost
Benchtop
Microprocessor pH, mV and Temperature Meter, 5-Point Calibration, ±0.01 pH
- Reads
- pH · mV · ORP · °C
- mV
- 0 to ±1999 mV
- ORP
- Electrode at extra cost
Method
How it is measured
01
Connect
Fit an ORP electrode in place of the pH electrode and switch the meter to mV mode.
02
Check
Read a standard ORP solution of known value to confirm the electrode responds correctly.
03
Measure
Immerse the electrode in the sample and note the mV reading once it is stable.
Applications
Where it is measured
Questions
Frequently asked
What does an ORP reading tell you?
ORP (oxidation-reduction potential) is read in millivolts. A positive value means the water is oxidising, for example when chlorine or ozone is present; a negative value means it is reducing. It is used to control disinfection and to follow redox reactions in process water and effluent.
Do I need a separate electrode for ORP?
Yes. ORP is read with an ORP (redox) electrode, which has a platinum sensor in place of the glass pH bulb. It is not included with the meter and is supplied at extra cost.
How is an ORP electrode checked?
ORP needs no buffer calibration. Read a standard ORP solution of known mV value; the reading should match it within the tolerance stated for the solution.
Application support
Need to measure ORP?
Describe the sample, the range you expect and the quantity. A specialist replies with a recommendation and a quotation, including the ORP electrode.
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