Detection principle:

The determination principle of COD, ammonia nitrogen, and total phosphorus is based on the closed catalytic digestion colorimetric method using a digestion tube. The determination of ammonia nitrogen is based on the Nessler's reagent colorimetric method, and the determination of total phosphorus is based on the closed digestion colorimetric method, both of which are recognized by the US EPA. After importing cold light sources, narrowband interference technology, and microcomputer automatic data processing, the COD, ammonia nitrogen, and total phosphorus values of the sample are directly displayed.

Features:

1. The COD determination meets the HJ/T399-2007 standard and is accurate and effective.
2. The determination of ammonia nitrogen meets the HJ535-2009 standard and is accurate and effective
3. The determination of total phosphorus meets the HJ670-2013 standard and is accurate and effective
4. Adopting imported high brightness and long-life cold light source with excellent optical performance, the light source has a lifespan of up to 100000 hours
5. Large LCD screen with full Chinese display, direct data reading, simple and time-saving operation
6. Dissolve colorimetric integrated, no need to replace tube, simple and fast measurement, no safety hazards
7. Can save 20 standard curves and 200 measured values (date, time, parameters, test data)
8. Memory standard working curve, users can also calibrate the curve as needed
9. Equipped with curve coverage interference function to prevent accidental operation of covering curves
10. Equipped with data storage function and data power-off protection function, it is convenient to query historical measurement data and prevent data loss
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. Dissolve COD, total phosphorus, total nitrogen and other projects

Technical Specifications: