Shanghai BOQU Instrument designs, manufactures and calibrates pH/ORP, dissolved oxygen, conductivity, turbidity/TSS, residual chlorine, COD/nutrient, TOC and SWAS analyzers for water utilities, wastewater plants, aquaculture farms, power stations and biopharma fermentation lines in more than 100 countries and regions.
Trusted by global chemical, pharmaceutical and engineering leaders
Every BOQU instrument is produced under ISO 9001 and ISO 14001 systems, calibrated in-house and aged for 48 hours before shipment, so it performs on day one in your plant.
High-Temp SensorA rugged pH electrode engineered for bioreactors, fermenters and hot process lines, built to survive repeated steam sterilization cycles. Awarded the Shanghai Brand certification.
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High-Temp SensorDissolved oxygen electrode for aerobic fermentation and hot process media, providing stable DO feedback for aeration and agitation control.
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IoT DigitalSmart digital pH sensor with RS485 Modbus RTU output. Connects directly to PLC, SCADA or IoT gateways without a separate transmitter.
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Optical SensorInfrared scattered-light turbidity/TSS sensor for drinking water, effluent and sludge monitoring, with an automatic cleaning option to limit fouling.
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Dual ChannelMonitor pH and conductivity on one controller, ideal for hydroponics, RO pretreatment and cooling water dosing where panel space is limited.
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Multi-ParameterIntegrated panel system combining pH, residual chlorine, turbidity, conductivity, DO and more for drinking water networks and secondary supply stations.
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TransmitterIndustrial pH/ORP transmitter with 4–20 mA, RS485 and relay outputs for closed-loop dosing in wastewater, chemical and power plants.
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ConcentrationConductivity-based concentration measurement for acid and caustic lines, CIP systems and chemical dosing, reducing manual titration.
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DisinfectionContinuous free chlorine monitoring for drinking water, swimming pools and disinfection control, helping operators hold residuals within target limits.
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SWASTrace-level analyzers for steam and water analysis systems, protecting boilers and turbines against silica deposition, scaling and corrosion.
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TOCTotal organic carbon monitoring for pharmaceutical purified water, surface water and wastewater organic load tracking.
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EffluentAutomated wet-chemistry analyzers for discharge compliance, with automatic calibration and data logging for regulatory reporting.
View SpecificationsSelect your industry to see which parameters matter most, why they matter, and the BOQU instruments engineers typically specify for that duty.
Discharge permits are judged on numbers, not effort. Continuous online data lets operators correct aeration, dosing and clarification before an exceedance happens, instead of discovering it in a weekly lab report.
Public health depends on stable disinfection and low turbidity from the filter outlet to the customer tap. Real-time residual chlorine and turbidity data provide early warning of filter breakthrough or chlorine demand changes.
Dissolved oxygen can crash within hours at night. Continuous DO, pH and ammonia monitoring linked to aerators protects stock, improves survival and feed conversion, and reduces disease outbreaks in ponds and RAS systems.
Microorganisms produce target metabolites only inside narrow pH and DO windows. Sensors here must stay accurate after repeated steam sterilization, which is why BOQU built a dedicated high-temperature sensor laboratory.
In thermal power generation, trace contaminants in feedwater and steam cause scaling, corrosion, efficiency loss and unplanned outages. SWAS analyzers give chemists the early signal they need to protect boilers and turbines.
Disinfection effectiveness depends on chlorine and pH together. Continuous monitoring prevents algae and bacteria growth, protects swimmers from skin and eye irritation and keeps facilities compliant with public health codes.
Nutrient uptake is governed by solution pH and electrical conductivity. Keeping both inside the crop's target window maximizes yield and prevents nutrient lockout or root burn in recirculating systems.
Two owned factories in Shanghai, an in-house R&D team and nearly two decades of export experience behind every instrument we ship.
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Founded in 2007 in Kangqiao Town, Pudong New Area, Shanghai, BOQU is a manufacturer, not a reseller. Research and development, sensor fabrication, PCB assembly, analyzer integration, calibration and technical support all happen under one roof across our Kangqiao and Lingang factories.
This end-to-end control is what lets us offer stable lead times, consistent calibration and genuine OEM/ODM flexibility to distributors, system integrators and EPC contractors worldwide. Our engineers have supported projects ranging from fermentation plants in India and Russia to aquaculture farms in Korea and Malaysia and wastewater plants in Vietnam.
An in-house R&D team develops electrodes, optics, firmware and enclosures, so custom ranges, protocols and housings can be engineered rather than improvised.
China's first high-temperature water quality sensor laboratory, used to calibrate and validate sensors for sterilization and hot-process duty.
4,632 m² of production space, 200+ staff and an annual output of more than 100,000 instruments across our Kangqiao and Lingang facilities.
Private labeling, custom cable lengths, measuring ranges and communication protocols for distributors and integrators, with fast, predictable delivery.
ISO 9001, ISO 14001, CE, SGS and FDA credentials, plus a 48-hour pre-shipment aging and calibration test on every instrument.
The pH5806 high temperature pH sensor has been awarded the Shanghai Brand certification, recognizing quality and technical leadership.
A quick reference compiled by BOQU application engineers to match measurement principle, industry and output before you request a quotation.
| Parameter | Common Measuring Principle | Where It Matters Most | Selection Tip |
|---|---|---|---|
| pH / ORP | Glass electrode; platinum ORP electrode | Wastewater neutralization, fermentation, pools, chemical dosing | For temperatures above typical ambient process limits or steam sterilization, specify a high-temperature electrode. |
| Dissolved Oxygen | Optical (fluorescence) or polarographic membrane | Aeration basins, aquaculture, aerobic fermentation | Optical sensors reduce maintenance in wastewater and aquaculture; polarographic designs suit sterilizable bioreactor ports. |
| Conductivity / TDS | 2-electrode, 4-electrode or inductive (toroidal) | RO and pure water, boiler water, acid/caustic concentration | Use 2-electrode cells for pure water, inductive sensors for dirty or highly conductive media. |
| Turbidity / TSS / MLSS | Infrared scattered light | Drinking water filtration, effluent, activated sludge | Choose a self-cleaning model for sludge and effluent to prevent window fouling. |
| Residual Chlorine | Amperometric / constant-voltage method | Drinking water, distribution networks, swimming pools | Stable pH and flow at the sensor are essential; pair with a pH sensor for compensation. |
| COD, NH₃-N, TP, TN | Automated wet chemistry, colorimetry, UV absorption | Discharge permits and municipal effluent reporting | Confirm the analysis method required by your local discharge standard before ordering. |
| Silicate, Phosphate, Sodium | Colorimetric and ion-selective methods at trace levels | Power plant SWAS, boiler feedwater and steam | Specify sample conditioning (cooling and pressure reduction) together with the analyzer. |
Not sure which configuration fits your process? Contact a BOQU application engineer with your parameter list, range, temperature and installation method.
Real installations from over 2,000 enterprise customers, from high-temperature fermentation to municipal sewage.
IndiaA fermentation manufacturer keeps broth pH inside the optimal growth window so microorganisms synthesize target metabolites efficiently.
ChinaOnline steam, boiler and process water monitoring helps a waste-to-energy plant protect equipment and maintain stable generation.
RussiaA food and feed producer running sterile and non-sterile fermentation relies on BOQU sensors for consistent biotechnology process control.
AmericaAligned with WHO guidance of ≥0.5 mg/L free chlorine after at least 30 minutes contact at pH below 8.0, continuous analyzers verify safe disinfection.
KoreaReal-time water quality data drives automated control for freshwater and marine culture of fish, shellfish, crustaceans and seaweed.
MalaysiaAn indoor aquaculture facility uses continuous monitoring to keep oxygen and water chemistry stable for year-round fish production.
BrazilpH and conductivity are measured in the nutrient dosing loop to keep fertilizer concentration within the crop's ideal range.
VietnamA 200 m³/day industrial-park plant in northern Vietnam meets the QCVN 40:2011/BTNMT Class A discharge standard with online multi-parameter monitoring.
From raw materials to smart sensors, and from PCB assembly to finished analyzers, every manufacturing stage is completed in our own workshops for consistent, traceable quality.
A production line you can see is far more trustworthy than one you are told about. Walk through our workshops in 360° before you place an order or plan an on-site audit.
Straight answers from our export and engineering teams.
BOQU is a manufacturer. Founded in 2007, Shanghai Boqu Instrument Co., Ltd. designs, produces and tests its sensors and analyzers in two Shanghai facilities (Kangqiao and Lingang) with 4,632 m² of floorspace, 200+ employees and an annual output of more than 100,000 instruments.
Production is managed under ISO 9001 and ISO 14001 systems, and products carry CE, SGS and FDA related certifications. The pH5806 high temperature pH sensor has also been awarded the Shanghai Brand certification.
Depending on the model, BOQU online analyzers provide 4–20 mA analog outputs, relay alarm contacts and RS485 Modbus RTU communication. IoT digital sensors output RS485 Modbus RTU directly, so they connect to PLC, DCS, SCADA or cloud gateways without a separate transmitter.
Yes. BOQU operates a dedicated high-temperature water quality sensor laboratory, and high-temperature pH and DO sensors such as the pH5806 and DOG-208FA are designed for bioreactors, fermenters and hot process lines that undergo repeated steam sterilization. See our High Temperature PH&ORP Sensor range.
Yes. BOQU supports OEM and ODM projects including private labeling, custom housings, cable lengths, measuring ranges, firmware and communication protocols, backed by an in-house R&D team.
Please share the parameters to measure, expected range, water type, process temperature and pressure, installation method (immersion, flow-through or pipeline), required output signal, power supply and any local compliance standard. BOQU engineers will then recommend a suitable configuration.
With 18+ years in water quality monitoring, our application engineers can review your process, recommend sensor types and outputs, and prepare a configuration that fits your project and budget.
