MP-ORP pH & ORP Sensor
The only pH and ORP sensor certified for safe exposure to drinking water under NSF-61. Bare electrode design with self-cleaning technology — no reagents, no membranes, no waste stream. Measures temperature, pH, and ORP in one compact sensor.
NSF-61
If you measure ORP in your drinking water system and want to save 70,000 gallons of water and thousands of dollars in reagents and labor, the MP-ORP is the only NSF-61 certified option on the market.
Key Benefits
NSF-61 Certified for Drinking Water
The only pH/ORP sensor certified for safe exposure to drinking water under NSF/ANSI/CAN 61. No leaching of harmful materials.
No Waste Stream
Direct in-pipe installation eliminates the 70,000 gallons of water traditional analyzers waste every year. Zero sample line, zero floor drain.
Self-Cleaning (SensiCLENE)
Bare electrode design with integrated SensiCLENE cleaning system extends calibration intervals and reduces maintenance.
Flow Independent
Accurate measurements across varying hydraulic conditions without pressure regulators or flow cells. Works in any pipe orientation.
3 Parameters in One Sensor
Measures pH, ORP, and temperature simultaneously in a single probe — compensated and ready for SCADA integration.
Long Calibration Intervals
Self-cleaning electrodes maintain accuracy for months between calibrations. Dramatically reduces operator visits to remote sites.
Applications
From drinking water to maritime — anywhere pH and ORP measurement matters.
Drinking Water Treatment
Monitor pH for coagulation, flocculation, and corrosion control. ORP for disinfection verification at treatment plant effluent.
Reverse Osmosis (RO)
Track pH and ORP pre- and post-RO membranes to optimize membrane performance and chemical dosing.
Ballast Water Treatment
ORP measurement for TRO verification in maritime ballast water treatment systems. Ruggedized for shipboard environments.
Industrial Process Water
pH and ORP monitoring for cooling towers, boiler feedwater, and industrial process loops where reagent-free measurement saves time and money.
Aquaculture & Pools
Continuous pH and ORP measurement for fish farms, aquaculture systems, and commercial swimming pools.
Wastewater Effluent
Effluent ORP monitoring for dechlorination verification and discharge compliance at wastewater treatment facilities.
Technical Specifications
| Specification | Value |
|---|---|
| pH Range | 2 – 12 pH |
| pH Accuracy | ± 0.1 pH |
| ORP Range | -1000 to +1000 mV |
| ORP Accuracy | ± 5 mV |
| Temperature Range | 2°C to 50°C (35.6°F to 122°F) |
| Pressure Range | 0 – 100 psi (6.9 bar) |
| Flow Range | 0.1 to 10 ft/s (flow independent) |
| Connectivity | Bluetooth, Modbus RTU/TCP, BACnet |
| Calibration Interval | 3–6 Months (application dependent) |
| Maintenance Interval | 12 Months (wear parts swap) |
| Certifications | NSF/ANSI/CAN 61 & 372 |
| Installation | Wet-tap, PVC tee, immersion, or flow cell |
Download the MP-ORP Data Sheet
Get full technical specs, wiring diagrams, installation options, and dimensional drawings.
Ready for reagent-free pH & ORP monitoring?
Talk to our team about the right sensor and installation for your application.