Technical Specifications

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

2、 Measurement methods: HJ/T399-2007 "Rapid digestion spectrophotometry", HJ535-2009 "Nessler's reagent spectrophotometry", HJ671-2013 "Ammonium molybdate spectrophotometry", alkaline persulfate digestion spectrophotometry.

3、 Measurement range: 0-10000mg/L (segmented), 0-50mg/L (segmented), 0-20mg/L (segmented), 0-100mg/L (segmented).

4、 Detection limits: 5 mg/L, 0.05 mg/L, 0.02 mg/L, 0.1 mg/L.

5、 Dissolving temperature: 165 ℃, 15 minutes, no need to dissolve 125 ℃, 30 minutes, 125 ℃, 30 minutes.

6、 Resolution: 0.001mg/L.

7、 Accuracy: COD>50ppm, 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: 310mm * 230mm * 150mm.

11、 Power supply: AC (220V ± 5%), 50Hz

12、 Environmental temperature: 5-40 ℃.

13、 Environmental humidity: ≤ 85% without condensation

14、 Weight: Host ＜ 3kg, Dissolver ＜ 6kg

Main Features

1. The COD determination is carried out using a method recognized by the US EPA, which complies with the HJ/T399-2007 standard and is accurate and effective.

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

3. The total phosphorus determination is carried out using the method recognized by the US EPA, which complies with the HJ670-2013 standard and is accurate and effective.

4. The total nitrogen determination is designed and developed according to GB11894-89, and the measurement results are accurate and effective

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

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

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

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

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

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

11. It has a curve coverage interference function, which can prevent accidental operation from covering the curve.

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

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

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

15. 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