Sensorex ORP Lab Sensors
Oxidation reduction potential (ORP), also known as REDOX, is a measurement that reflects the ability of a molecule to oxidize or reduce another molecule:
- Oxidation is the loss of electrons, so oxidizers accept electrons from other molecules
- Reduction is the gain of electrons, so reducers donate electrons to other molecules
Oxidation reduction potential is measured as a single voltage in millivolts (mV). Oxidizers have a positive ORP value, while reducers have a negative ORP value.
ORP is measured using an electrochemical sensor called an ORP or REDOX sensor. Similar to to pH sensors, the most common type of ORP sensor is a combination sensor with a measuring electrode and a reference electrode. The measuring cell, typically a noble metal like platinum or gold, detects changes in REDOX potential, while the reference provides a stable comparison signal.
Like a pH measurement, an ORP measurement is not a direct indicator of concentration, but rather an indicator of activity. However, in solutions with one active species, like pool water containing chlorine, ORP correlates to concentration.
ORP3000
ORP Electrode, Research Grade
In harsh laboratory or field conditions, where heat, moisture, or corrosive chemicals may damage equipment, ORP electrode durability is key. The ORP3000 is durable, research grade ORP electrode. All the functional components – the ORP measurement surface, the meter connection, and the cable connection – are reinforced with protective elements. Durable Ultem® body construction provides extensive chemical compatibility and withstands temperatures up to 100°C.
- Virtually unbreakable: removable guard protects ORP measurement surface and strain relief prevents damage to cable connection
- Ideal for difficult sample types: Double junction reference protection for testing samples containing heavy metals, TRIS buffer, and other contaminants
- No maintenance required: Sealed gel reference design does not require users to refill solution
- Extensive chemical compatibility: Constructed with durable Ultem®, proven in a range of chemical conditions
- Ready for wet or corrosive environments: BNC boot protects meter connection
ORP2000
ORP Sensor, Extended Life
When measuring samples such as wastewaster that may contain proteins, heavy metals, or other contaminants, it is important to use an ORP sensor (REDOX sensor) designed to withstand unpredictable chemical environments. The ORP2000 features double junction reference protection, which prevents contamination by sample components that interact with silver (Ag). The durable Ultem® body ensures extensive chemical compatibility, making the ORP2000 a highly versatile analytical tool.
- Virtually unbreakable with durable Ultem® body construction and recessed protected glass
- Reliable and accurate ORP / REDOX measurements
- No refilling or maintenance required with sealed gel-filled design
- Instantly ready for use and shipped in storage bottle for long shelf life – guaranteed for one year
- One year limited warranty
ORP1000
ORP Sensor, Polycarbonate Laboratory
The ORP1000 is a durable and easy to use ORP sensor. Great for outdoor applications, such as monitoring swimming pool chlorine, this probe has built in protection for the ORP sensor surface. Use the ORP1000 with any ORP meter accepting a BNC connector.
- Very fast response time: Platinum measurement surface for fast response time and stable readings
- No maintenance required: Sealed reference design requires no refilling
- Durable construction: Polycarbonate body is built for frequent lab or field use
- Instantly ready for use: Shipped in storage bottle for long shelf life – guaranteed for one year
- One year limited warranty
