Project Description

TN-2A Total Nitrogen Analyzer

Product Overview

The instrument has a wide range of features such as high measurement accuracy, wide range, and simple operation.

Application Area

Measurements of total nitrogen in surface water, groundwater, industrial wastewater and domestic sewage.


  • With high performance, long life (100000 hours), high brightness light source imported from the United States, equipped with high stability optical system, with good accuracy and repeatability.

  • The digester adopts a 3.5-inch color touch screen with a resolution of 320×240, which is displayed 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 zero error measurement of the set point is realized, which completely eliminates the error caused by the nonlinearity of the common digester 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 digester exceeds 200 ℃, the instrument will cut off the power supply by itself to ensure the safety of digestion process.

  • It can store 10 working curves and 999 historical records, and data will not lose even when power is cut off.

  • With USB interface, data can be transferred to computer.

  • With printing function: you can print the measurement results immediately, or query and print records in the future.

Technical Parameters

Measurement Range: 0 ~ 100mg / L Indication Error: ≤ ± 5%
Repeatability: ≤ ± 3%
 Temperature Control System: Room temperature ~ 180 ° C can be set, the total nitrogen digestion temperature is 125 ° C
Digestion Time: 30 minutes
Optical Stability: The absorbance drift within 20min is less than 0.002A
Dimensions: Main unit: 340mm×250mm×130mm Digestion instrument: 355mm×260mm×135mm
Weight: Host 4kg, digestion instrument 5.5kg
【Packing List】
Name Quantity Name Quantity
Host 1 1 digestion instrument
10 digestion tubes 10 colorimetric tubes
1 tube rack 1 set of total nitrogen reagent
1 digestion shield USB line 1
1 data collection disc 1 operation manual
1 product certificate 1 warranty card

Related TP and TN Analyzer