XT-408 COD ammonia nitrogen total phosphorus and total nitrogen tester, COD determination using the elimination tube closed catalytic elimination colorimetric method, ammonia nitrogen determination using the Nano reagent colorimetric method, total phosphorus using closed elimination colorimetric method, total nitrogen using closed elimination ultraviolet photometric absorption method, are recognized by the U.S. EPA method, and then imported cold light source, narrow-band interference technology and microcomputer automatic processing of the data, and then display the sample directly! COD, ammonia nitrogen and total phosphorus. The instrument is widely used in environmental monitoring, sewage treatment, scientific research units and universities and colleges.

Technical Parameters

　　Measuring parameters: COD (chemical oxygen demand), ammonia nitrogen, total phosphorus, total nitrogen.

　　Measurement Methods: HJ/T399-2007 “Rapid Elimination Spectrophotometry”, HJ535-2009 “Nano Reagent Spectrophotometry”, HJ671-2013 “Ammonium Molybdate Spectrophotometry”, Alkaline Persulfate Elimination Photometry.

　　III. Measuring range: 0-10000mg/L (subsection), 0-50mg/L (subsection), 0-20mg/L (subsection), 0-100mg/L (subsection).

　　IV. Lower detection limit: 5 mg/L, 0.05 mg/L, 0.02 mg/L, 0.1 mg/L.

　　V. Ablation temperature: 165℃, 15 minutes, without ablation 125℃, 30 minutes, 125℃, 30 minutes.

　　VI. Resolution: 0.001mg/L.

　　VII、Accuracy: COD＞50ppm, the error of display value is not more than 5%, the error of display value is not more than 5%.

　　VIII. Repeatability: relative standard deviation not more than 3%.

　　Nine, optical stability: ≤ 0.001A / 20 minutes.

　　X. Size: 310mm*230mm*150mm.

　　XI, power supply: AC (220V ± 5%), 50Hz

　　XII. Ambient temperature: 5~40℃.

　　XIII, ambient humidity: ≤ 85% non-condensing

　　XIV, weight: host <3kg, eliminator <6kg

Main features

　　1.COD determination using the U.S. EPA approved methods, in line with HJ/T399-2007 standards, accurate and effective determination.

　　2. Ammonia nitrogen is measured using the U.S. EPA-recognized methods, in line with HJ535-2009 standards, accurate and effective measurement.

　　3. Total phosphorus is determined using the U.S. EPA-approved methods, in line with the HJ670-2013 standard, accurate and effective.

　　4. Total nitrogen is designed and developed according to GB11894-89, with accurate and effective results.

　　5. Imported high brightness and long life cold light source is adopted, with better optical performance and a long life of 100,000 hours.

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

　　7. The digestion and colorimetry is one, no need to change the tube, simple and fast determination, no safety hazards.

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

　　9. Memory standard working curve, the user can also be required to calibrate the curve.

　　10. One key to restore factory settings, can be quickly recovered when the curve is lost due to misoperation.

　　11. With curve overlay interference function, which can prevent the curve from being overwritten due to misoperation.

　　12. With data storage function and data power failure protection function, it is convenient to query historical measurement data and prevent data loss.

　　13. With USB interface, the data can be transferred to the computer for permanent preservation.

　　14. With printing function, the measured value can be printed immediately or query history record printing.

　　15.Adopt intelligent PID temperature control technology and double anti-temperature protection system, safe and uniform heating, fast speed. It can be used for the dissolution of COD, total phosphorus, total nitrogen and other items.

List of standard equipment