Technical Parameter

1、 Measurement parameters: COD (Chemical Oxygen Demand), Ammonia Nitrogen.

2、 Measurement methods: HJ/T399-2007 "Rapid digestion spectrophotometric method", HJ535-2009 "Nessler's reagent spectrophotometric method".

3、 Measurement range: 0-2000mg/L (segmented), 0-50ppm (segmented).

4、 Detection limit: 5 mg/L, 0.05 mg/L.

5、 Dissolving temperature: 165 ℃, 15 minutes, no need for digestion.

6、 Resolution: 0.001mg/L.

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

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

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

10、 Size: 310 * 230mm * 150mm.

11、 Power supply: AC (220V ± 5%), 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

1. COD determination is carried out using EPA approved methods, which comply with HJ/T399-2007 standards and are accurate and effective.

2. The determination of ammonia nitrogen is carried out using a method recognized by the US EPA, which complies with HJ535-2009 and is accurate and effective.

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

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

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

6. It can save 20 standard curves and 200 measured values (date, time, parameters, test data).

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

8. It has a curve coverage interference function to prevent curve coverage problems caused by customer misoperation.

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

10. 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