1TW-5255 Ammonia Nitrogen • COD • Total Phosphorus Analyzerbrief introduction

This instrument features a liquid crystal display, a separate design for the digester and host, built-in curves, a built-in printer, and a USB interface for uploading data. It is widely used in environmental monitoring, sewage treatment, large, medium, and small water plants, industrial and mining enterprises, domestic or industrial water use, universities, research institutions, and other departments.

IITW-5255 Ammonia Nitrogen • COD • Total Phosphorus AnalyzerTechnical indicators

1) Measurement range: (beyond dilution determination)

COD：5～2000mg/L； Ammonia nitrogen: 0.02-25mg/L Total phosphorus: 0.00-10mg/L

2) Indication error: COD：≤ ±5 %； Ammonia nitrogen: ≤ ±3%(F.S)； Total phosphorus: ≤ ±5%(F.S)

3) Repeatability: ≤ 3%

4) Anti chlorine interference: ≤ 2000mg/L (COD determination)

5) Temperature control system: Room temperature~180 ℃ can be set, COD digestion temperature is 165 ℃, and total phosphorus digestion temperature is 120 ℃.

6) Temperature control accuracy: ± 0.5 ℃

7) Temperature control time: adjustable from 1 to 999min

8) Dissolving time: COD is 15 minutes, total phosphorus is 30 minutes

9) Optical stability: The instrument's absorbance value drifts less than 0.002A within 20 minutes

10) Batch processing capacity: 16 water samples

11) Normal usage conditions:

⑴ Environmental temperature: 5-40 ℃; ⑵ Relative humidity: ≤ 85%; ⑶ Power supply: AC(220±22)V； （50±0.5）Hz；⑷ No significant vibration or electromagnetic interference, avoid direct sunlight.

12) Dimensions: COD ammonia nitrogen total phosphorus analyzer 340mm × 250mm × 130mm

Dissolver (DIS-16 type) 216mm × 320mm × 146mm

13) Weight: 4kg mainframe, 6kg digestion apparatus

14) Power consumption:<500W

IIITW-5255 Ammonia Nitrogen • COD • Total Phosphorus AnalyzerInstrument features

1) The separation of the measuring instrument and the digestion instrument does not affect the stability of the optical system.

2) The measuring instrument is a cold light source and narrowband interferometric optical system with good optical stability.

3) The digestion instrument has PID automatic temperature control and timing, with high accuracy.

4) Simple and time-saving operation. Dissolving colorimetric does not require changing the tube.

5) The digestion temperature and time can be infinitely set for other purposes.

6) 10 standard curves and 99 measured values of COD, ammonia nitrogen, and total phosphorus can be stored separately without loss during power outage.

7) LCD large screen LCD display, easy and intuitive operation.

8) Equipped with factory working curve recovery function.

9) Printing function: It can print test records immediately or query records for printing.

10) USB interface, can be connected to a computer.

4、 Preparation List

1 host, 1 digestion instrument, 30 digestion colorimetric tubes, and 1 test tube rack, COD、 One set of reagents for ammonia nitrogen and total phosphorus, one digestion protective cover, one user manual, one product certificate, and one warranty card.