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Liquid Analysis
Home » Products » Liquid Analysis » Laboratory & Field COD Analyzer for Rapid Water Quality Assessment


For environmental engineers, laboratory analysts, and industrial wastewater managers, rapid, reliable, and versatile COD measurement is essential for regulatory compliance, process control, and environmental monitoring.
The Instrava COD Analyzer provides fast detection of COD across 20–10,000 mg/L, with direct concentration readout and flexible measurement modes for both φ16mm tubes and 30mm cuvettes. The high-definition 3.5-inch OLED display and intuitive dial-style UI make operation simple, while the included LH-A109 9-hole digestion unit enables precise, reproducible sample preparation. Portable, lightweight, and durable, the instrument is designed to handle both field and laboratory workflows.
Liquid Analysis Description
Laboratory & Field COD Analyzer Typical Application Scenarios
Environmental laboratories conducting surface water, groundwater, and industrial wastewater testing
On-site emergency water quality monitoring
Industrial wastewater treatment plants (chemical, food & beverage, textile, electroplating, papermaking)
Regulatory compliance monitoring for municipal sewage and effluent discharge
Research institutions and universities requiring rapid COD analysis
This analyzer is suitable for both laboratory-grade testing and field-based rapid assessment, supporting multiple industries and measurement scenarios.


Laboratory & Field COD Analyzer Engineering Advantages
Wide Detection Range: Supports COD measurement from 20–10,000 mg/L with segmented ranges for high accuracy.
Dual Measurement Modes: Supports φ16mm tube and 30mm cuvette measurements, increasing flexibility for various laboratory setups.
High-Definition OLED Display: 3.5-inch color screen with dynamic dial interface, clearly shows range, over-limit warnings, and measurement values for intuitive operation.
Stable & Durable Optical System: Cold light source with narrow-band interference ensures long-term stability, 10⁵ hours lifetime, and reliable absorbance readings.
Robust Instrument Body: ABS casing reduces wear and tear in laboratory or field environments.
Built-In Data Storage: Stores up to 5,000 measurement records for easy traceability and reporting.
Integrated Digestion Unit: supports 9-hole digestion, accurate temperature control (±2°C), and 15 pre-configured COD curves, improving repeatability and throughput.
Liquid Analysis Parameter
| Parameter | Specification |
|---|---|
| Measurement Range | 20–10,000 mg/L (segmented) |
| Measurement Modes | φ16mm tube, 30mm cuvette |
| Display | 3.5-inch OLED color display, dial-style UI |
| Reproducibility | ≤3% |
| Indication Error | ≤8% |
| Data Storage | 5,000 records |
| Instrument Size | 215 × 150 × 110 mm |
| Instrument Weight | 0.85 kg |
| Rated Voltage | AC 220V ±10% / 50Hz |
| Power | 4W |
| Parameter | Specification |
|---|---|
| Temperature Range | Room temperature – 190°C |
| Heating Time | Room temp – 165°C < 10 min |
| Temperature Accuracy | ±2°C |
| Digestion Time Error | ≤ ±0.2s / 60min |
| Number of Digestion Holes | 9 |
| Pre-configured COD Curves | 15 |
| Screen | 3.5-inch color touch screen |
| Digestion Tube Diameter | φ16mm |
| Tube Height | 150mm |
| Heating Liquid Depth | 80mm |
| Digestion Capacity | 0–10 mL |
| Instrument Size | 247 × 176 × 200 mm |
| Instrument Weight | 3.8 kg |
| Rated Voltage | AC 220V ±10% / 50Hz |
| Power | 600W |
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 segmented measurement ranges (20–10,000 mg/L) and supports both φ16mm tubes and 30mm cuvettes, providing precise readings even in highly variable wastewater concentrations. Engineers benefit from reliable, reproducible data for compliance and process control.
Yes. The compact 0.85 kg main unit and portable LH-A109 digestion block allow for field deployment without sacrificing laboratory-grade precision. Its durable ABS casing ensures long-term reliability in harsh industrial environments.
The supports 9-hole digestion, fast heating (room temp–165°C in <10 minutes), and pre-configured COD curves. This reduces sample preparation time, improves throughput, and ensures consistent, traceable results for industrial and environmental monitoring.
With low power consumption (4W), maintenance-free operation, long-life cold light source, and 5,000-record internal storage, the analyzer minimizes total cost of ownership while providing high reliability across multiple deployment sites.
The dynamic dial interface provides real-time over-range warnings, and the instrument automatically adjusts measurement parameters. This ensures safe, accurate readings and reduces the risk of false data in high-concentration or complex samples.
High-definition OLED display with intuitive dial-style UI
Pre-set and customizable COD curves for multiple applications
Dual measurement modes for tubes and cuvettes
Lightweight, portable design for rapid deployment
These features reduce training time and make the instrument suitable for both laboratory analysts and field engineers, accelerating project implementation.
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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