The COD (chemical oxygen demand) analyzer is widely used in various fields such as environmental monitoring, wastewater treatment, drinking water safety, industrial effluent management, food processing, pharmaceuticals, and chemical industries. The instrument employs advanced technologies such as cold light sources, narrow-band interference, and microcomputer data processing to directly display the COD values (in mg/L) of the samples. It enables users to quickly and accurately assess the quality of water, providing essential data support for environmental protection and water quality management.
Specification
Measuring range | COD: 5～200mg/L ；200～2000mg/L （Measurable after dilution if over-range） |
Measuring accuracy | 0.1 mg/L；1mg/L |
Indication error | ≤±5 % |
Repeatability | ≤±3% |
Anti-chlorine interference | ≤2000mg/L |
Optical stability | Absorbance drift ≤0 .002A/20min; Light source lifespan 100,000 hours |
Testing standard | HJ/T 399-2007 |
Analytical method | Closed Vessel Digestion and Colorimetric Method (Tubes) |
Processing capacity | 12 samples per run |
Temperature control system | COD digestion temperature: 165℃; Temperature range: room temperature~200℃; Digestion time: 1~9999min；Temperature accuracy：±0.5℃ |
Digestion period | 15min |
Curve and Storage | 20 factory calibration curves; Can store 500 records. |
Dimensions | Instrument: 190mm×240mm×180mm; Digester: 160mm×240mm×180mm; |
Weight | Instrument：2.75kg Digester：5kg |
Working environment | (1) Ambient temperature: 5~40℃ ⑵ Relative humidity: ≤85% ⑶ Power supply: AC 220 (165V-240V) (4) No significant vibration and electromagnetic interference, avoid direct sunlight. |
