China Laboratory ORP Sensor Wholesaler & Manufacturer

While both sensors utilize a high-impedance potentiometric measurement architecture and an Ag/AgCl reference half-cell, their sensing half-cells differ fundamentally. A pH sensor features a hydrated hydrogen-ion selective glass bulb generating millivolt potentials proportional to H+ activity. Conversely, an ORP sensor utilizes an inert noble metal indicator (such as pure platinum or gold) that acts solely as an electron donor or acceptor, measuring the aggregate oxidation-reduction potential of all chemical couples in solution without altering the chemical equilibrium.

Shanghai BOQU Instrument Co., Ltd. is an established original equipment manufacturer (OEM/ODM) established in 2007. We operate two advanced manufacturing facilities in Kangqiao and Lingang, Shanghai, spanning 4,632 square meters of automated workshops. Sensor glass blowing, polymer gel formulation, PCB surface-mount assembly, 48-hour environmental aging, and NIST-traceable factory calibrations are conducted strictly in-house under ISO 9001 and ISO 14001 certified management systems.

Our high-temperature biopharma models, such as the pH5806, feature a specialized high-temperature glass formulation and an engineered pressurized gel reservoir. During 130℃ steam exposure, internal pressure compensation prevents boiling, bubbling, or electrolyte leakage through the ceramic diaphragm, ensuring prompt response recovery and zero-potential stability once cooled to operating temperature.

Yes. BOQU's IOT-485 digital series integrates an ultra-compact microcontroller directly inside the electrode cap or sensor body. The sensor outputs standard RS485 Modbus-RTU signals directly, operating on 12V or 24V DC power. This eliminates the necessity for a standalone secondary transmitter, allowing direct connection to edge IoT gateways, PLCs, PACs, and DCS networks over distances up to 1,200 meters without signal degradation.

To provide an accurate recommendation, our application engineering team requires: (1) Measuring range and target medium characteristics, (2) Process temperature and operating pressure ranges, (3) Presence of aggressive solvents, sulfides, fluorides, or organic contaminants, (4) Mechanical mounting style (submersion, flow-cell, or retractable PG13.5 line), and (5) Required communication interfaces (4–20 mA, relay alarms, RS485 Modbus, or wireless LoRaWAN/NB-IoT).