Detection Principle
The development and design of an economical total nitrogen analyzer, the alkaline persulfate digestion photometric method, uses a closed digestion tube and potassium persulfate as an oxidant to convert all nitrogen-containing compounds in the sample into nitrate at 125 ℃. It then reacts with a color reagent under acidic conditions to form a complex, and its absorbance is measured using spectrophotometry. The total nitrogen content in the water sample can be directly measured on the instrument.
Technical Parameter
Measuring Item |
total nitrogen |
Measurement range |
0-80mg/L |
accuracy |
±5% |
detection limit |
0.5mg/L |
Optical stability |
≤0.001A/20minute |
Measurement time |
30minute16Branch sample/write instructions or comments on |
Temperature indication error |
±1℃ |
Temperature uniformity |
±1℃ |
Light source lifespan |
1010000 hours |
Number of curves |
standard3strip extend77strip |
storing data |
1800individual |
display |
LCDdisplay |
Display interface |
All in Chinese |
Colorimetric method |
Colorimetric tube |
ambient temperature |
5-40℃ |
ambient humidity |
Relative humidity ≤85% |
safety protection |
Dual security protection |
Pre set digestion mode |
CODTotal phosphorus and total nitrogen |
Reminder alarm |
buzzer |
Customer customization |
support |
rated voltage |
AC220V±10%/50Hz |
rated power |
instrument<10W, digestion apparatus<350W |
Alarm prompt1 |
Reaching the specified temperature and maintaining a constant temperature |
Alarm prompt2 |
Dissolve completed and stop heating |
Instrument dimensions |
310mm*230*150 |
Dimensions of the digestion instrument |
230*340*130(mm) |
Instrument characteristics
1. The certification method "Alkaline persulfate digestion photometric method" has been developed and designed to comply with national standards, and the measurement is effective.
2. Adopting imported high brightness and long-life cold light source, with excellent optical performance and a light source lifespan of 100000 hours.
3. Large LCD screen with full Chinese display, direct data reading, simple and time-saving operation.
4. Integrated digestion and colorimetric analysis, no need to replace the tube, simple and fast measurement, and no safety hazards.
5. It can save 80 standard curves and 1800 measured values (date, time, parameters, test data).
6. Memory standard working curve, users can also calibrate the curve as needed.
7. One click factory reset, which can quickly recover in case of curve loss caused by misoperation.
8. It has data storage function and power-off protection function, making it convenient to query historical data and prevent data loss.
Standard configuration
Serial Number |
name call |
quantity |
Serial Number |
name call |
quantity |
1 |
Economic rapid measurement of total nitrogenFixed instrument host |
1tower |
6 |
Simplified operation flowchart |
1share |
2 |
⌀16mmColorimetric tube |
10branch |
7 |
operation instructions |
1share |
3 |
Total nitrogen determination reagent |
1cover |
8 |
Color comparison rack |
1individual |
4 |
Color tube cleaning cloth |
1piece |
9 |
certificate of conformity/warranty card |
1share |
5 |
Multi functional digestion instrument |
1tower |
10 |
Power Cables |
1strip |