The COD-571 chemical oxygen demand analyzer adopts the potassium dichromate colorimetric method and is used in conjunction with a dedicated digestion device. It is a laboratory specific water quality analysis equipment. The instrument is equipped with a stable LED light source and a microcontroller control system, which is easy to operate and has accurate data. It can quickly detect COD content in water bodies and is widely used in environmental monitoring, industrial and mining enterprises, scientific research institutions and other scenarios.
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Chemical Oxygen Demand Analyzer characteristics
Core Technical Parameters
| Item | Specification |
|---|---|
| Measuring Method | Potassium Dichromate Colorimetry |
| Measuring Range | 0~150 mg/L, 0~1500 mg/L |
| Basic Error | ≤±8% |
| Repeatability | ≤3% |
| Stability | COD variation ＜6 mg/L within 20 min |
| Power Supply | AC 220±22V, 50Hz |
| Operating Temperature | 5~35℃ |
| Relative Humidity | ≤85% |
| Data Storage | 200 groups |
| Communication | USB Interface |
| Dimensions | 315×225×100 mm |
| Weight | Approx. 2 kg |
Principle of operation
In the digesting apparatus, the water sample is oxidized with a particular oxidant under the national standard potassium dichromate procedure. The absorbance of the solution after the reaction was detected by LED photoelectric system and the amount of chemical oxygen requirement was automatically converted according to the standard curve. The device can distinguish between high and low concentration reagents and measuring ranges, effectively reducing the interference of chloride ions, thereby assuring precise and reliable detection findings.
Featured Applications
- Urban sewage treatment plant: Daily testing of various process stages and effluent COD, evaluation of treatment effectiveness, and ensuring compliance with discharge standards.
- Various types of industrial and mining enterprises: monitor the COD index of production wastewater, control the discharge concentration, and meet internal self inspection needs.
- Ecological environment monitoring station: responsible for routine water quality sampling and testing of surface water, groundwater, wastewater, etc.
- Research institutes and universities: used for water quality related experiments, course teaching, and project research and analysis.
- Third party testing agency: undertakes commissioned testing of water samples, issues compliance testing reports and raw data.
Supporting List
- 1 host
- 1 set of COD-571 dedicated digestion device
- 4 721 type colorimetric dishes
- USB communication cable, dedicated testing reagents
- National standard power cord, spare fuse
- User manual, product qualification certificate
Technical Support
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The COD-571 chemical oxygen demand analyzer is thoroughly tested according to national standard, with mature hardware setup and robust detection performance. Its two ranges design can meet the vast majority of water quality test applications. It is easy to operate, well-equipped, and has practical functions such as data storage and communication transfer. It also complies with GLP managing requirements, with a balance between detection precision and ease of usage. It is an outstanding equipment for laboratory COD analysis, which can provide reliable testing support for environmental supervision, enterprise self-inspection, scientific research and teaching or third-party testing services.
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