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Liquid Analysis
Home » Products » Liquid Analysis » Handheld COD Analyzer & Portable Water Quality Detector for Industrial and Environmental Monitoring

In industrial wastewater control, environmental compliance, and emergency water quality assessment, delayed or inaccurate results can compromise regulatory compliance and operational efficiency. Field engineers, environmental inspectors, and laboratory personnel need rapid, precise, and portable COD measurement to make informed decisions on-site.
The Instrava Handheld COD Analyzer & Portable Water Quality Detector provides real-time, multi-range COD measurement, suitable for field, laboratory, or emergency monitoring. Its compact, lightweight design, combined with integrated reagent support and automated curve calibration, ensures reliable and reproducible results within seconds. This analyzer delivers laboratory-grade performance in a portable, field-ready format, enabling efficient water quality management and process control.
Liquid Analysis Description
Handheld COD Analyzer Typical Application Scenarios
Industrial wastewater compliance and process monitoring
Municipal sewage treatment and surface water assessment
Environmental emergency response and field inspections
Groundwater quality testing
Laboratory water quality analysis for chemical, food, beverage, and textile industries
Scientific research institutions and universities
The device is suitable for both on-site rapid testing and controlled laboratory measurements, providing flexibility across operational environments.


Handheld COD Analyzer Engineering Advantages
Lightweight: 0.5 kg, compact size 190 × 96 × 103 mm
Simple handheld operation, ideal for remote and emergency monitoring
Backlight LCD for easy reading under varying light conditions
Supports automatic and manual measurement modes
Sample determination in as fast as 3 seconds
Concentration displayed immediately when sample is inserted
Measures CODcr: 3–150 mg/L, 20–1500 mg/L, 200–15000 mg/L (requires digester)
Supports prefabricated reagents and user-defined calibration curves for precise field or lab measurement
SD card storage (FAT32 format)
Data can be exported to EXCEL or WORD with time records
No additional software required, enabling easy integration with existing reporting systems
LED light source with stable optical performance
Undervoltage alarm ensures measurement continuity
Battery options: 2 × AA or DC 3V / 23 mA, supporting field operation
Liquid Analysis Parameter
| Parameter | Specification |
|---|---|
| Test Items | Chemical Oxygen Demand (CODcr) |
| COD Measuring Range | 3–150 mg/L, 20–1500 mg/L, 200–15000 mg/L (with digester) |
| Light Source | LED |
| Wavelength | 420 nm, 610 nm |
| Display | LCD with backlight |
| Measurement Mode | Absorbance, concentration, sample number |
| Data Storage | SD card (FAT32), export to EXCEL/WORD |
| Sample Bottle | 16 mm round |
| Power Supply | 2 × AA batteries or DC 3V / 23 mA |
| Operating Temperature | 5–40ºC |
| Relative Humidity | ≤85% (no condensation) |
| Dimensions | 190 × 96 × 103 mm |
| Weight | 0.5 kg |
| Standard Accessories | Main engine, SD card, 2 × AA batteries, power adapter, manual, warranty certificate, portable case |
Instrava OEM/ODM
At Instrava, our instruments are developed with a strong focus on real industrial applications. Each product is designed to operate as a reliable component within measurement, control, and automation systems, rather than as a standalone device.
Our engineering team supports customers during product selection by evaluating process conditions, operating environments, and system requirements, ensuring stable and long-term performance in actual use.
In addition to standard configurations, Instrava offers flexible customization options, including measurement range, materials, output signals, communication interfaces, and installation methods. All custom solutions are engineered to meet industrial standards and application-specific demands.
We also support OEM projects and system integration, providing consistent product design, technical documentation, and long-term supply to ensure smooth integration and reliable operation throughout the project lifecycle.

The analyzer uses rapid digestion spectrophotometry according to HJ/T399-2007, providing real-time COD measurements on-site. This allows plant engineers and environmental managers to verify compliance before discharge, reduce regulatory risk, and adjust treatment processes without waiting for centralized lab results.
Yes. The analyzer is designed for surface water, groundwater, domestic sewage, and industrial wastewater, supporting prefabricated reagents and custom calibration curves. It is suitable for chemical, pharmaceutical, food, beverage, textile, electroplating, papermaking, and petrochemical industries.
Compact design (0.5 kg) with built-in LCD and backlight enables field operation without preheating. Measurements are completed in as fast as 3 seconds, ensuring engineers can conduct rapid multi-point inspections with consistent precision, even in remote or outdoor conditions.
The analyzer stores data on an SD card, exportable to EXCEL or WORD with time records. Integration with reporting systems or environmental monitoring platforms enables centralized tracking, analysis, and audit-ready documentation, reducing manual logging errors.
LED light source with long service life
Minimal maintenance and no preheating requirement
Dual battery or DC power supply
Automatic and manual measurement modes
These factors reduce recalibration, downtime, and consumable costs over the instrument lifecycle.
The device includes built-in operational guidance, pre-loaded curves, and prefabricated reagents. Teams require minimal training and can start testing immediately, making it ideal for emergency spills, environmental audits, and routine field inspections.
By choosing Instrava, you gain a partner with a deep understanding of industrial applications and the expertise to meet today’s operational challenges.
Our role extends beyond products—we support your success through dependable solutions and long-term commitment.
Innovation at Instrava is guided by real industrial requirements. We continuously refine our technologies to address evolving operational challenges, ensuring practical and reliable performance in demanding environments.
We provide engineering-level customization to match specific process conditions. From measurement range and materials to output signals and installation options, our solutions are configured to fit real applications.
Quality and reliability are fundamental to every Instrava product. Manufactured under strict quality control and thoroughly tested, our instruments deliver accurate, stable, and long-term performance.
Instrava combines global engineering expertise with responsive local support, ensuring our partners benefit from internationally aligned technology and timely regional service.
Our broad portfolio of measurement and control instruments enables us to address a wide range of industrial needs, providing integrated solutions from a single, reliable source.
We work closely with our partners from technical consultation to after-sales support. Our focus is on delivering solutions that create lasting value and support long-term operational success.
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