Explore factory-direct wholesale water quality sensors engineered in Shanghai for mission-critical purity monitoring, sterilization endurance, and industrial process automation.
Ruggedized electrochemical formulation with internal temperature compensation for thermal reactors and pure steam condensate loops.
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Steam-sterilizable electrode with polymerized solid electrolyte engineered for CIP/SIP cycles in vaccine and enzyme synthesis tanks.
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Modular S8/PG13.5 threaded plug connector ensuring stable signal transmission in aggressive pure chemical and pure water processes.
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High-impedance glass matrix delivering drift-free continuous measurement in thermal boilers, scrubbers, and industrial effluent loops.
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Certified Shanghai Brand sensor formulated for bioreactors, surviving pressurized steam sterilization without signal degradation.
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Smart digital bus sensor featuring direct RS485 Modbus-RTU output, eliminating transmitter bottlenecks in modern automated pipelines.
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Electrochemical dissolved oxygen electrode built to withstand severe agitation and hot process media inside biopharma fermenters.
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Infrared scattered-light optical sensor with wiper clean options, providing critical raw water intake turbidity analysis.
View SpecificationsDelivering high-reliability analytical instrumentation through vertically integrated production, independent specialized glass laboratories, and stringent quality control protocols.
We established China’s first dedicated high-temperature water quality sensor testing lab. Every electrode formula undergoes extensive steam autoclave stress testing up to 135°C to assure thermal cycling resilience.
Measuring pure water pH (<10 µS/cm) is notorious for streaming potentials and reference poisoning. Our proprietary lithium glass composition delivers ultra-low junction resistance and minimal alkali error.
Across our 4,632 m² facilities in Kangqiao and Lingang, Shanghai, we operate internal glass-blowing, SMT electronics assembly, CNC metal machining, and algorithmic calibration under ISO 9001 and ISO 14001 audit standards.
Zero infant mortality is our procurement promise. All pure water electrodes and microcontrollers are submitted to 48 hours of continuous dynamic aging and electrochemical drift checks before packaging.
We support global instrument brands, EPC contractors, and distributor networks with custom insertion depths, PG13.5/NPT housings, proprietary Modbus registers, private laser engraving, and custom branding.
Direct volume component sourcing, domestic technical talent, and owned production lines allow us to provide tier-one measurement performance at 40–60% lower CapEx than legacy Western alternatives.
Over 18 years of specialized engineering in liquid analytical chemistry, serving the world's most demanding water utilities and industrial plants.
Standard wholesale export configuration table. Contact our sales department for bulk tiered contract pricing, customized OEM cable runs, and frame agreements.
| Model / Sensor Code | Primary Target Media | Key Technical Principle | Measurement Limits | Junction / Electrolyte | Indicative B2B Wholesale Tier |
|---|---|---|---|---|---|
| pH5806 / PureWater Pro | Ultra-pure water, demineralized water (<2 µS/cm) | Low-impedance lithium glass, pressurized gel reference | 0.00 – 14.00 pH, -10 – 100°C | Dual ceramic annular diaphragm, 3.3M KCl gel | $85 – $145 / unit (MOQ: 10) |
| pH-HT-0130 High-Temp | Bioreactors, fermentation broth, autoclave CIP/SIP | High-temperature glass membrane, S8/PG13.5 connector | 0.00 – 14.00 pH, 0 – 130°C (≤0.6 MPa) | Polymer solid electrolyte, porous PTFE barrier | $95 – $165 / unit (MOQ: 10) |
| IOT-485-pH Smart Node | Semiconductor UPW rinse, automated skid systems | Integrated digital pre-amplifier + RS485 Modbus RTU | 0.00 – 14.00 pH, -5 – 80°C | Double-junction ceramic, anti-interference sleeve | $120 – $190 / unit (MOQ: 5) |
| SWAS-Cond-01 Pure Cell | Power plant boiler feedwater, steam condensate | Concentric 316L stainless steel 2-electrode (k=0.01) | 0.01 – 20.00 µS/cm, 0 – 100°C | Direct flow chamber cell with Pt1000 RTD | $110 – $180 / unit (MOQ: 5) |
| DCA130 Integrated System | Reverse osmosis, ultrafiltration, chemical dosing | Dual-channel controller accepting pH + EC inputs | pH: 0-14, EC: 0-2000 µS/cm | Panel-mount IP65 casing, dual 4-20mA + RS485 | $240 – $360 / unit (MOQ: 2) |
*Note: Exact B2B unit pricing depends on annual purchase volume commitments, private labeling requirements, custom cable specifications (VP6, S8, BNC, M12), and warranty extensions.
Tailored analytical architectures designed to solve low-conductivity measurement drift, ionic starvation, and volatile process dynamics across primary global sectors.
Feedwater and condensate systems demand accurate pure water pH monitoring to control amine dosing (e.g., ammonia or morpholine) and prevent Flow-Accelerated Corrosion (FAC). Our high-integrity flow cells isolate sample streams from atmospheric CO₂ contamination.
Maintaining metabolic viability during commercial antibody and antibiotic synthesis requires stable pH readings during repeated in-situ steam sterilization cycles. BOQU sensors leverage specialized reference electrolytes to eliminate diaphragm fouling.
Fabrication plants require sub-ppb contamination monitoring. Pure water pH sensors equipped with high-efficiency shielding prevent stray electromagnetic currents from cleanroom equipment from degrading critical resistivity readings.
Stable disinfection and network corrosion control require continuous pH, residual chlorine, and turbidity tracking. Integrating multi-parameter panels at secondary pumping nodes enables real-time distribution quality management.
Chemical processing and textile wastewater recycling skids subject electrodes to high osmotic pressures and volatile ions. Our robust PTFE annular junctions resist scaling and chemical poisoning across extreme operational envelopes.
Closed-loop recirculating hydroponics require continuous pH and electrical conductivity balance to prevent nutrient lockout. Digital RS485 sensor arrays provide robust, multichannel telemetry for automated fertigation lines.
Key trends driving international sensor sourcing decisions, edge computing adoption, and strategic lifecycle management in analytical chemistry.
Analog high-impedance cabling is rapidly giving way to edge-computing digital sensors. By integrating the micro-ADC directly within the sensor head, noise pickup over long cable runs is eliminated, providing stable Modbus-RTU communications directly to host PLCs.
Pure water inherently lacks ionic strength, leading to electrolyte depletion and junction potential fluctuations. Next-generation sensors incorporate positive-pressure gel reserves or flowing junction reservoirs to maintain continuous, stable ionic pathways.
Procurement teams are actively replacing expensive legacy Western single-source vendors with accredited, ISO-certified Chinese manufacturing partners that offer open protocol architectures, accessible consumables, and competitive volume pricing.
Clear technical and commercial answers from our engineering and export departments to assist your procurement evaluation.
Pure and demineralized water (conductivity <10 µS/cm) lacks sufficient dissolved ions to conduct the reference current reliably. This results in fluctuating junction potentials, static noise, and rapid electrolyte depletion. Furthermore, pure water rapidly absorbs carbon dioxide from ambient air, generating carbonic acid which artificially drives pH down.
BOQU resolves this through specialized low-impedance glass bulbs, high-leakage ceramic or PTFE annular junctions, pressurized reference chambers, and sealed stainless steel flow chambers that isolate the process fluid from atmospheric CO₂ exposure.
Shanghai Boqu Instrument Co., Ltd. is an authentic manufacturing enterprise established in 2007. We operate two production hubs in Pudong New Area (Kangqiao and Lingang), Shanghai, encompassing 4,632 m² of workshop space, over 200 dedicated staff, and fully independent R&D laboratories. We own complete manufacturing control from raw glass blowing to final analyzer firmware deployment.
Our operations are managed strictly under audited ISO 9001 quality management and ISO 14001 environmental management frameworks. Our products carry European Conformity (CE) certifications, RoHS compliance, SGS factory verification audits, and relevant FDA material clearances. Our flagship pH5806 sensor holds the prestigious Shanghai Brand product certification.
We provide standard dual 4–20 mA isolated analog outputs with programmable range limits, solid-state relay alarm outputs, and standard RS485 Modbus-RTU interfaces. Our digital IoT sensor line outputs Modbus-RTU directly from the probe head, allowing direct multidrop integration to SCADA, PLC, DCS, or remote telemetry gateways without intermediate transmitters.
Yes. We operate a specialized high-temperature water quality sensor laboratory dedicated to high-pressure thermal analysis. Our high-temperature sensors (such as pH5806 and DOG-208FA) use proprietary pressurized electrolyte gels that maintain measurement stability through repeated autoclave or steam-in-place (SIP) cycles up to 130°C.
Standard model evaluations carry an MOQ of just 1 to 2 units for qualification testing. For OEM white-label requests (custom laser marking, personalized model branding, specific cable lengths, and custom packaging), our typical baseline MOQ starts at 20 units. Standard in-stock sensor orders dispatch within 3–5 working days, while large OEM production runs ship within 2 to 3 weeks.
Explore complementary online analyzers, multi-parameter monitoring panels, and process transmitters engineered to build complete analytical monitoring stations.
Combines pH and electrical conductivity measurement into a single DIN controller, optimizing panel space in RO skids.
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Integrated skid-mounted analyzer capturing pH, chlorine, turbidity, and conductivity for water distribution and potable stations.
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Heavy-duty process controller delivering precision 4–20 mA loop control and relay alarms for chemical neutralization.
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Inductive toroidal conductivity meter for in-line acid/alkali strength tracking and clean-in-place (CIP) line automation.
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Amperometric continuous sensor providing real-time free chlorine analysis with automatic temperature and pH compensation.
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Sub-ppb trace wet-chemical analyzer preventing scale build-up and turbine blade deposition in supercritical steam loops.
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Continuous UV oxidation TOC monitor meeting USP and European Pharmacopoeia standards for pure water for injection (WFI).
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Automated industrial spectrophotometric system for environmental effluent tracking and automated government telemetry.
View SpecificationsConsult with our application specialists to configure matching flow chambers, select optimal glass impedances, and receive formal wholesale quotation schedules within 24 hours.
No.118 Xiuyan Road, Pudong District, Shanghai, China
Direct Export Sales: +86 18916729106
Engineering Inquiries: [email protected]
