Fully automatic Kjeldahl nitrogen analyzer

Scope of application:

1. Widely used in food processing, feed production, tobacco animal husbandry, soil and fertilizer, environmental monitoring, medicine, agriculture, scientific research, teaching, quality supervision, inspection and quarantine, etc. for nitrogen content or protein content determination, cation exchange capacity determination;

2. Detection of ultra-trace nitrogen content, can accurately test to 10ppm.

Product features:

1. Adopt national standard Kjeldahl nitrogen determination method, concentrated sulfuric acid environment digestion sample, alkaline environment steam distillation, boric acid absorption, indicator titration endpoint color judgment method. Participated in the drafting of the national standard GB/T22923-2008 and the official JJF109-2012 "Calibration Specifications for Nitrogen Determiners";

2.☆Fully automatic reagent addition, distillation, titration, titration cylinder waste discharge, calibration, liquid level monitoring, calculation, data storage, test report generation and upload, the entire experimental process is fully automated, simple and efficient;

3. Fully automatic safety monitoring: safety door, digestion tube in place monitoring; the distillation generator has multiple protections such as pressure sensor, steam overpressure protection, temperature sensor, temperature protection switch, water level float and potential dual detection; distillation distillate temperature and volume monitoring to avoid excessive temperature or distillation volume fluctuations affecting the test results; real-time monitoring of cooling water flow, low water pressure alarm, automatic termination of operation when water is stopped; condensation effluent temperature monitoring to ensure complete condensation of the sample and ensure accurate and reliable experimental results;

4. Brand-new multi-core ARM operating system, Chinese and English operation interfaces are optional, and the 10-inch LED high-definition color LCD touch screen monitors and displays the experimental process in real time;

5. Double distillation mode, steam flow rate 0~100% can be adjusted arbitrarily;

6. External titration cup, the experimental process is visible in real time, and the titration system lighting configuration is combined with mature color endpoint judgment software to minimize the influence of external light sources;

7. High-precision titration system, professional integrated precision plunger, to ensure test accuracy and reliability of use;

8.☆The titration system adopts dynamic titration technology and automatic variable speed titration technology. The titration system automatically detects and switches the titration speed, truly achieving the simultaneous completion of distillation, titration, and calculation processes, reducing the experimental time by 40%;

9. The titration endpoint color can be automatically and manually calibrated, and the titration endpoint judgment uses a high-precision 16-bit three-primary color digital signal color sensor to collect color signals;

10. The instrument can store 100,000 sets of data. The test results can be expressed in 12 ways, including Word and Excel;

11. The pump body adopts polytetrafluoroethylene bellows pump: resistant to strong acid and alkali corrosion, super particle clogging resistance structure, stepper motor control, stable liquid addition. Negative pressure suction is safe;

12.☆ The splash-proof bottle is made of polymer material, resistant to high temperature and strong alkali, while ensuring that ammonia does not leak and the recovery rate is not low;

13. The reagent barrel liquid level monitoring ensures that there is no liquid shortage during the experiment.

14. The instrument has self-test function and one-button reset.

15. Two working modes are standard, and nitrate nitrogen and high nitrogen automatic test modules can be added according to needs.

16.☆ 304 stainless steel distillation reaction chamber, Teflon-treated visual safety door.

17. The distillation system specially designed in accordance with the law of ammonia escape ensures a high and reliable test recovery rate

18. The instrument has a built-in operation assistant and the instrument is more intelligent.

Technical parameters:

1. Measurement range: 0.1mg～240mgN (conventional nitrogen)

2. Measurement speed: 3-7min/sample

3. Recovery rate: ≥99.5%

4. Repeatability error: ≤0.5%

5. Linear range: RSD≤1% for samples in the digestive tube within the range of 1-3 times the nitrogen content

6. Distillation flow rate: 0～100% adjustable

7.☆Titration accuracy: 0.1μL/step

8. Determination of sample weight solid: ≤6g liquid ≤25mL

9.☆Data storage capacity: 100,000 (inside the instrument)

10.☆500 groups of user-defined schemes

11. Cooling water consumption: 0.5L/min (when the cooling water temperature is 15℃), 1.5L/min (when the cooling water temperature is 25℃); the cooling water temperature must be kept below 35℃ for normal use of the instrument.

Product's Website：http://en.huoerd.com/ksddy/1644.html