QIWEI QW-KDN type, Kjeldahl nitrogen meter distillation device, automatic nitrogen measurement distillation system
Using Kjeldahl principle, measuring range of 0.1~ 200mgN, collection rate ≥ 99%. Automatic water, alkali and distillation functions, easy to operate, suitable for a variety of sample detection.
QiWei
QW-KDN type
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Product Introduction
KDN is an automatic nitrogen measurement distillation system designed according to the classical (Kjeldahl nitrogen determination) method. The main workflow of the instrument includes: automatic water addition (including automatic water level detection function), automatic alkali addition (button control), manual acid addition (manual configuration), automatic distillation (button control) and other parts. The instrument is simple to operate; safe and reliable to use; time-saving and labor-saving; It is suitable for analysis, teaching and research in grain and oil testing, feed analysis, plant nutrient testing, soil and fertilizer testing, chemical industry and other industries, and is a reliable tool for operators and users.
Working principle (Kjeldah's principle)
Proteins are organic compounds that contain nitrogen. Food is heated and digested together with sulfuric acid and catalysts to break down proteins, and the decomposed ammonia combines with sulfuric acid to form ammonium sulfate. Then the ammonia is free under the action of alkaline distillation, and the released ammonia and water vapor are condensed through the condenser tube and enter the conical flask containing boric acid. After being absorbed by boric acid, it is titrated with sulfuric acid or hydrochloric acid standard solution, and the protein content is obtained by multiplying the consumption of acid by the conversion coefficient.
QiWei QW-KDN type Kjeldahl nitrogen meter (distillation)Specifications
| LIST | VALUE |
|---|---|
| Determination variety | Grain, Feed, Food, Dairy, Beverage, Soil, Water, Sediment and Chemicals etc. |
| Measurement range | Nitrogen content in 0.1~ 200mgN (mg nitrogen), (nitrogen content 0.1%~ 99%) |
| Measured quantity | Single continuous distillation measurement |
| Chill down water consumption | 3-4L/min (water temperature below 25 degrees) |
| collection rate | ≥ 99% (relative error, including digestion) |
| Sexual repeability rate | Relative standard deviation ＜ +/- 1% |
| Operating Mode | semi-automatic |
| Working time | Distillation time 5-15 minutes, (depending on sample and nitrogen content) |
| Rated Voltage | 220V/50Hz |
| Rated power | 800W |
QiWei QW-KDN type Kjeldahl nitrogen meter (distillation) Packing list
[Note] Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.