Technical Parameter

1、 Measurement method: HJ/T399-2007 "Determination of Chemical Oxygen Demand in Water Quality - Rapid Digestion spectrophotometric method".

2、 Measurement range: 0-10000 mg/L (segmented measurement).

3、 Detection limit: 5 mg/L.

4、 Dissolving temperature: 165 ℃, 15 minutes.

5、 Anti chlorine interference: 1000mg/L.

6、 Resolution: 0.001mg/L.

7、 Accuracy: COD＞50mg/L， The indication error shall not exceed 5%.

8、 Repeatability: The relative standard deviation shall not exceed 3%.

9、 Optical stability: ≤ 0.001A/20 minutes.

10、 Instrument size: 310mm * 230mm * 150mm.

11、 Instrument power supply: AC (220V ± 10%), 50Hz.

12、 Environmental temperature: 5-40 ℃.

13、 Environmental humidity: ≤ 85% without condensation.

14、 Weight: The host weighs less than 3kg, and the digester weighs 6kg.

main features

The COD analyzer uses EPA approved methods and complies with HJ/T399-2007 standards, with accurate and effective measurements.

2. Adopting imported high brightness and long-life cold light source, with good optical performance and a light source lifespan of up to 100000 hours.

3.5-inch large LCD screen with full Chinese display, direct data reading, simple and time-saving operation.

4. Integrated digestion and colorimetric analysis, no need to replace the tube, simple and fast measurement, and no safety hazards.

5. It can save 80 standard curves and 1800 measured values (date, time, parameters, test data).

6. Memory standard working curve, users can also calibrate the curve as needed.

7. One click factory reset, which can quickly recover in case of curve loss caused by misoperation.

8. It has data storage function and data power-off protection function, making it convenient to query historical measurement data and prevent data loss.

9. Equipped with a USB interface, data can be transferred to the computer for permanent storage.

10. It has a printing function, which can immediately print the measured values or query historical records for printing.

11. The digestion instrument adopts intelligent PID temperature control technology and a dual anti overheating protection system, ensuring safe and uniform heating with fast speed. Used for the digestion of COD, total phosphorus, total nitrogen and other projects.

Standard List