ORP/Redox Measurement Products
Oxidation-Reduction Potential (ORP) or Redox potential measurements are used to monitor chemical reactions, to quantify ion activity, or to determine the oxidizing or reducing properties of a solution. ORP is a measurement of the electrical potential of a redox reaction and serves as a yardstick to judge how much oxidation or reduction takes place under existing conditions.
ORP electrodes measure the voltage across a circuit formed by the measuring metal half cell and the reference half cell. When the ORP electrode is placed in the presence of oxidizing or reducing agents, electrons are constantly transferred back and forth on its measuring surface, generating a tiny voltage. The ORP measurement can be made using the millivolt mode of a pH meter.
Major areas of usage include the treatment of industrial wastes, study of biological systems, oxidation of cyanide, bleaching of pulp, manufacture of bleach and reduction of chromate wastes. The measurement of ORP is also useful in pool water treatment as an indication of sanitation in relation to free chlorine parameter.
Eutech offers a wide range of ORP meters that measure both pH and ORP values in various educational, laboratory and industrial applications. These include ORPTestr®10 pocket tester, portable meters CyberScan Series pH 300, pH 310, pH 11 and pH 110, EcoScan pH 6 and the CyberScan bench meter series 510, 1100, 2100, 1500 and the colour touchscreen research-grade series 6000.
Browse by product type:
Pocket-Sized Testers
| Model | Meter Highlights | Parameter | Range | Memory |
|---|---|---|---|---|
 ORPTestr10 | Platinum ring electrode | mV | -999 to +1000 mV | No |
Economy Handhelds
| Model | Meter Highlights | Parameter | Range | Memory |
|---|---|---|---|---|
 Eutech pH 6+ | Economical pH, ORP measurement | pH/mV/°C | 0.00 to 14.00 pH | No |
 EcoScan pH 6 | Economical pH, ORP measurement | pH/mV/°C | 0.00 to 14.00 pH | No |
Standard Handhelds
| Model | Meter Highlights | Parameter | Range | Memory |
|---|---|---|---|---|
 CyberScan pH 11 | Standard Portable | pH/mV/°C | -2.00 to 16.00 pH | 50 data sets |
 CyberScan pH 110 | Expanded memory, RS232 output | pH/mV/°C/°F | -2.00 to 16.00 pH | 100 data sets |
Waterproof Handhelds
| Model | Meter Highlights | Parameter | Range | Memory |
|---|---|---|---|---|
 CyberScan pH 300 | Waterproof Portable | pH/mV/°C | -2.00 to 16.00 pH | 16 data sets |
 CyberScan pH 310 | Waterproof, GLP | pH/mV/°C/°F | -2.00 to 16.00 pH | 50 data sets |
Standard Bench
| Model | Meter Highlights | Parameter | Range | Memory |
|---|---|---|---|---|
 CyberScan pH 510[ Upgrade Version Available ] | Dual display standard bench | pH/mV/°C | 0.00 to 14.00 pH | 50 data sets |
Deluxe Bench
| Model | Meter Highlights | Parameter | Range | Memory |
|---|---|---|---|---|
 CyberScan pH 1100[ Upgrade Version Available ] | Back-lit dual-display | pH/mV/°C/°F | -1.000 to 14.000 pH | 100 data sets |
 CyberScan pH 2100[ Upgrade Version Available ] | Back-lit dual-display Ion concentration measurement | pH/mV/Ion/°C/°F | -1.000 to 14.000 pH | 100 data sets |
Process Electrodes
| Model | ORP Range | Operating Temperature | Pressure Tolerance | Potential Matching Pin |
|---|---|---|---|---|
 ECHTAUTSO05B | ±1000 mV | 0 to 80°C / 32 to 176°F | 6 bar (87 psi) | Platinum |
 ECHTPTTSO05B | ±1000 mV | 0 to 80°C / 32 to 176°F | 6 bar (87 psi) | Platinum |
 ECFR21A1A1 | ±1000 mV | -5 to 95°C / 23 to 203°F | 6.9 bar (100 psi) | SS316 |
Laboratory Electrodes
| Model | ORP Range | Temperature Range | Sensor Type | Reference Type |
|---|---|---|---|---|
 ECFC7960101B | -1000 to 1000 mV | 0 to 80°C | Platinum pin | Ag/AgCl sealed |
 ECFC7960201B | -1000 to 1000 mV | 0 to 80°C | Platinum pin | Ag/AgCl sealed |
 ECFC79601R01B | -1000 to 1000 mV | 0 to 80°C | Platinum pin | Ag/AgCl refillable |
 ECFC79602R01B | -1000 to 1000 mV | 0 to 80°C | Platinum pin | Ag/AgCl refillable |
 ECFG7960101B | -1000 to 1000 mV | 0 to 100°C | Platinum band | Ag/AgCl refillable |