Is BOQU a manufacturer or a trading company?

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.

Which certifications do BOQU water quality instruments hold?

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.

What signal outputs and communication protocols are available?

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 can connect to PLC, DCS, SCADA or cloud gateways without a separate transmitter.

Can BOQU sensors be used in high-temperature fermentation and steam sterilization?

Yes. BOQU operates a dedicated high-temperature water quality sensor laboratory, and its 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.

Do you offer OEM and ODM services?

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.

What information should I provide to get the right analyzer recommendation?

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.

High Temperature PH&ORP Sensor Wholesaler & Factory for the Costa Rica market

Premium Product Lineup

High Temperature PH&ORP Series for Costa Rican Plants

Engineered to resist poisoning, thermal shock up to 130°C, and pressure surges up to 6 bar in aggressive continuous flows.

Market Context

Costa Rica’s High-Temperature Processing Landscape

Aligning advanced analytical instrumentation with Central America's sustainability frontrunner.

Geothermal Energy Production

Costa Rica generates over 99% of its power from renewable sources, spearheaded by Instituto Costarricense de Electricidad (ICE). Geothermal fields across Guanacaste (Miravalles and Las Pailas) circulate hot, mineral-saturated acidic fluids. Standard electrochemical sensors suffer from junction bridging and rapid drift. High-temperature, pressurized polymer gel electrodes are imperative to continuously manage reinjection brine chemistry and control scaling without premature membrane destruction.

Agro-Industrial & Sugar Processing

From the central valleys to Guanacaste, sugar mills (Ingenios) and coffee wet mills demand precision liming and clarifier control at 95°C–105°C. Traditional glass bulbs foul quickly due to heavy bagasse particulate, high Brix syrup, and calcium precipitation. Our specialized flat-glass and annular PTFE liquid junctions resist solids adhesion, maintaining high linearity during long harvest cycles without frequent recalibration.

Free Trade Zone Medical & Pharma Hubs

The Coyol Free Zone and Greater Metropolitan Area host major life science leaders. Bioreactor lines run rigorous Clean-In-Place (CIP) and Steam-In-Place (SIP) protocols at 121°C–130°C. Sensors must deliver FDA-grade biopolymer compliance, zero toxic electrolyte leakage, and immediate stability recovery following autoclaving cycles to prevent ruined active pharmaceutical ingredient (API) batches.

Technology Architecture

Engineering Roadmap: Overcoming Harsh Thermal Kinetics

How our factory achieves operational resilience at high temperatures and high pressures.

Engineering Challenge	Legacy Market Sensor Failure	BOQU High-Temp Architectural Solution
Reference Poisoning & AgCl Dissolution	At sustained temperatures >80°C, AgCl dissolves into the electrolyte, depositing silver at the diaphragm and causing heavy reference offset.	Double / Triple Chamber Reference with Ag/AgCl Ion Trap: Isolated polymer electrolytes block heavy metals and sulfide intrusion, maintaining zero drift over 100+ SIP sterilizations.
Diaphragm Clogging in High Solids	Porous ceramic junctions plug instantly in sugar syrups, pulp digestion, and geothermal mineral slurries.	Pore-Controlled Annular PTFE or Open Aperture: Hydrophobic, non-stick liquid junction eliminates clogging and maintains rapid ionic mobility under hydraulic pressure fluctuations.
Membrane Impedance Shift	Conventional pH glass membrane exhibits extreme thermal hysterisis and brittleness when shifting between 20°C and 130°C.	Specially Blended Low-Impedance Alkali-Resistant Glass: Fast response (<10s), mechanical impact resilience, and broad 0–14 pH linear response even in 100°C alkaline caustic CIP baths.
Mechanical Seal Integrity	Standard potting fails, allowing steam moisture to penetrate internal wiring and destroy digital electronics.	Hermetically Sealed Glass-to-Metal Joints & S8/PG13.5 Threads: IP68 rating, autoclave-proof, certified to maintain 0.6 MPa continuous backpressure.

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Comprehensive Solutions

Complete Process Integration: From Probe to Cloud SCADA

Modular instrumentation adapted to international environmental and operational frameworks.

Direct Modbus RS485 & Industrial IoT

Every sensor connects directly or through our intelligent transmitters via Modbus RTU / 4-20mA signals. This enables Costa Rican plants to integrate sensors into plant-wide PLC/DCS architectures or cellular IoT telemetry without proprietary vendor-lock, cutting deployment expenses by up to 40%.

Compliance with MINAE & Water Law N° 277

Costa Rica enforces stringent discharge rules via the Ministry of Environment and Energy (MINAE). Our continuous ORP and pH tracking monitors neutralizing effluent tanks automatically, producing verifiable audit trails that keep processing facilities fully compliant with domestic and international ESG benchmarks.

Automated Retractable Assemblies

Minimize maintenance down-time: pair our high-temperature sensors with pneumatically driven or manual retractable holders. Technicians can clean, calibrate, and hot-swap sensors during continuous operation without venting reactor lines or stopping pipeline flows.

Direct Factory Advantage

China Factory 4.0: Resilient Production & Volume Economics

Eliminate intermediate markups. Leverage direct manufacturer capacity from Shanghai to Puerto Limón or Caldera.

Dual Production Hubs (4,632 m²)

Operating across Kangqiao and Lingang, our facilities manufacture over 100,000 analytical instruments annually. Specialized automated electrode blowing, precision robotic glass-coating, and high-temp vacuum gel injection ensure repeatable micro-tolerances.

Full traceability on every batch of pH-sensitive glass
In-house high-temperature simulation autoclaves
Customized electrode length from 120mm to 450mm

Rigorous 48-Hour Thermal Aging

Quality reliability is non-negotiable. 100% of our high-temperature sensors undergo dynamic thermal cycling, pressure chamber verification up to 1 MPa, and a 48-hour continuous stability burn-in before release, ensuring zero-defect arrival in Costa Rica.

Full ISO 9001 and ISO 14001 Quality Framework
CE, RoHS, SGS third-party verified
Shanghai Brand certified sensor design

OEM/ODM & Flexible Wholesale Tiers

We serve Central American engineering procurement contractors (EPCs) and local distributor partners with flexible minimum order volumes (MOQs), private labeling, custom laser markings, tailored cable lengths, and plug compatibility (VP, S8, BNC, K8S).

Air-freight shipping directly via DHL/FedEx to San José
Complete documentation (COA, Calibration Certs, HS Code customs packs)
Rapid batch sample turnaround within 5-7 business days

2007

Factory Founded

100,000+

Sensors Produced / Year

130°C

Steam Sterilization Rating

100+

Export Countries Served

Procurement & Logistics

Seamless Supply Chain for Costa Rican Facilities

Direct factory channels ensure cost-efficiency, reliable replenishment, and technical onboarding.

Customs & Duty Optimization

Navigating Costa Rican customs (Aduanas) is streamlined with our standardized international shipping packages. We provide authentic Certificate of Origin documents, accurate HS Code 9027.90 classifications, and bilingual product datasheets to speed clearance at Juan Santamaría Airport (SJO) or sea ports.

Application Engineering Support

Our dedicated multilingual engineering desk provides process compatibility evaluations. Share your process flow, chemical constituents, operating temperatures, and backpressures; our team validates the appropriate membrane formulation and reference electrolyte prior to shipment.

Total Cost of Ownership (TCO)

European and American instrumentation brands charge steep premiums through complex local distributor networks. Direct sourcing from our Shanghai factory slashes replacement unit costs by 35% to 50% while meeting or exceeding identical MTBF (Mean Time Between Failures) benchmarks.

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Factory Inventory

High Temperature PH&ORP Full Catalog for Wholesale

Factory-direct inventory backed by guaranteed spare parts, matching cable assemblies, and specialized transmitters.

Technical Questions

Frequently Asked Questions: High Temperature Sensors in Costa Rica

Comprehensive engineering insights for procurement directors, instrumentation engineers, and plant managers.

How do BOQU sensors withstand 130°C steam sterilization (SIP)?

Our high-temperature electrodes utilize proprietary polymeric cross-linked gels pressurized internally to 0.4–0.6 MPa. This internal overpressure prevents process broth from back-flowing through the liquid junction during high-temperature SIP cycles. Coupled with heavy-duty thermal-resistant glass, the sensor maintains stable zero-potential (pH 7.00 ± 0.25) across dozens of consecutive autoclaving procedures.

What is the typical shipping transit time to Costa Rica?

For standard wholesale orders, products are prepared and thermally tested within 48 to 72 hours. Air express freight via DHL, FedEx, or UPS lands at San José (SJO) within 5 to 7 business days. For volume bulk shipments via ocean freight, transit to Puerto Limón or Puerto Caldera takes approximately 24 to 30 days with complete export clearance documentation provided.

Can your sensors replace Mettler Toledo, Endress+Hauser, or Broadley-James?

Yes. Our sensors are manufactured with industry-standard form factors: 120mm, 225mm, 325mm, and 425mm lengths, PG13.5 process threads, and standard S8 / VP6 / K8S connectors. They are drop-in physical and electrochemical replacements, requiring no modifications to your existing bioreactor ports, retractable holders, or transmitter inputs.

How do you handle ORP measurement in hot geothermal reinjection brine?

Geothermal brines contain high concentrations of dissolved hydrogen sulfide (H2S), silica, and heavy metal salts that instantly poison silver reference wires. We deploy massive solid-platinum rings paired with a double-salt-bridge electrolyte trap and a porous annular PTFE junction. This ensures accurate millivolt redox readings for anti-corrosion chemical dosing without junction clogging.