Detection principle:

The principle of COD ammonia nitrogen determination adopts the closed catalytic digestion colorimetric method with a digestion tube, and the ammonia nitrogen determination adopts the Nessler's reagent colorimetric method, both of which are recognized methods by the US EPA. After importing cold light source, narrowband interference technology, and microcomputer automatic data processing, the COD and ammonia nitrogen 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 complies with HJ535-2009 and is accurate and effective.
3. Adopting imported high brightness and long-life cold light source, with excellent 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. Dissolve colorimetric integrated, no need to replace tube, simple and fast measurement, no safety hazards.
6. Can save 20 standard curves and 200 measured values (date, time, parameters, test data).
7. The memory standard working curve, and 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.

Technical Specifications: