Automatic Laboratory COD Analyzer
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Automatic Laboratory COD Analyzer

Model: PCOD-3M

TOP INSTRUMENT Automatic Laboratory COD Analyzer uses advanced cold light source, narrow-band interference technology and microcomputer to automatically process data. The instrument first digests the sample with sealed catalyst, and then measure them by colorimetric method.
  • PCOD-3M

  • TOP


  • The analyzer is separated from the digester, which does not affect the stability of the optical system.

  • The analyzer is a cold light source, narrow-band interference optical system, with good optical stability.

  • Both the analyzer and digester are color touch screen with friendly operation interface and display in Chinese and English.

  • Simple and time-saving operation. The digestion colorimetry does not need to be changed.

  • With multi-point error-free calibration, the digester realizes zero error measurement at the set point, which completely eliminates the errors caused by the nonlinearity of the temperature sensor in common digesters in the market.

  • The digester has the function of timing reminder, which can automatically shutdown after digestion, and the instrument has the function of secondary protection. When the temperature of the digester exceeds 200 ℃, the instrument will cut off the power supply by itself to ensure the safety of the digestion process.

  • It can store 300 standard curves and 1000 measurements, and data will not lose even when power is cut off.

  • The curve can be inquired. In addition to the curve equation, the standard value of each standard substance, the corresponding absorbance, the calibration time and the number of the calibration personnel can be inquired, and the calibration state can be completely reproduced

  • Printing function: you can print a single or a whole page results.

  • With USB interface, and can be connected to computer.

  • The instrument has one key recovery function to prevent accidental loss of curve and data.

  • The instrument has its own calibration function, which can be self calibrated during operation, and can effectively eliminate the drift error caused by long-term use.

Packing List:





1Digestion instrument1

Digestion colorimetric tubes     


Tube rack

Cod reagent 1 set

Digestion shield


UBS data 

1Data collection disc1
Operation manual1Product certificate1
Warranty card1

Measurement range: COD: 5~2000mg/LIndication error: COD: ≤ ± 5 %
Repeatability:≤3%Display:color touch screen, Chinese and English display
Anti-chlorine interference:≤2000mg/LTemperature control system:can be set at room temperature ~200 °C, COD digestion temperature is 165 °C
Temperature control accuracy: ±0.5 °CTemperature control time: adjustable from 1 to 9999min
digestion time: COD is 15minOptical stability: the instrument absorbance value drifts less than 0.002A within 20min
Batch volume: 16 water samples Weight:Main unit 5kg;digestion instrument 5.5kg
Dimensions:measuring instrument 400mm*310mm*158mm;Digestion instrument 355mm*260mm*135mm
Power consumption:<500W

Normal use conditions:
Ambient temperature: 5 to 40 ° CRelative humidity:≤85%
Power supply: AC (220 ± 22) V; (50 ± 0.5) HzNo significant vibration and electromagnetic interference, avoid direct sunlight.

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ZHEJIANG TOP INSTRUMENT CO.,LTD., as a subsidiary of TOP Cloud agri, is a high-tech enterprise specializing in the R&D, manufacturing, sales for laboratory equipments, and provision of comprehensive laboratory solutions.



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