Detection principle:

The principle of COD ammonia nitrogen total phosphorus determination: COD determination adopts the closed catalytic digestion colorimetric method with a digestion tube, ammonia nitrogen determination adopts the Nessler's reagent colorimetric method, and total phosphorus determination adopts the closed digestion colorimetric method, all of which are recognized methods by the US EPA. After imported cold light source, 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 and a light source lifespan of up to 100000 hours.
5. 5-inch 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. It can save 60 standard curves and 2000 measured values (date, time, parameters, test data).
8. The memory standard working curve, and users can also calibrate the curve as needed.
9. One click factory reset allows for quick recovery in case of curve loss due to misoperation.
10. It has the function of curve coverage interference to prevent accidental operation of covering curves.
11. It has data storage function and data power-off protection function, making it convenient to query historical measurement data and prevent data loss.
12. Equipped with a USB interface, data can be transferred to the computer for permanent storage.
13. Optional printing function, which can print the measured values immediately or query historical records for printing.
14. Built in super large rechargeable battery, with ultra long standby time of up to 168 hours.
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.
16. The whole set of box configuration is convenient for carrying to the site and field for testing, making it the best choice for on-site operation.

Technical Specifications: