KDN-04A crude protein analyzer main product introduction:
The detection principle is:
Sampling ->Digestion ->Distillation ->Titration ->Calculation
The nitrogen analyzer for measuring protein content in samples is designed and manufactured based on the Kjeldahl principle. The instrument mainly consists of two steps: digestion and distillation of the sample. The first half of the process is carried out by a digestion furnace, and the second half is completed by a distiller. Finally, the protein content of the tested sample is calculated from the drip solution.
The KDN-04A nitrogen analyzer product adopts a well type electric heating core for the digestion furnace, which improves the digestion heat effect. When digesting the sample, an appropriate amount of H2SO4 and the sample are injected into the digestion tube, and a catalyst selenium sheet is placed in the tube (adding selenium sheet can accelerate the digestion and digestion process of the sample, shorten the digestion time). Harmful gases such as SO2 emitted during the digestion process are discharged into the sewer through the exhaust pipe of the digestion furnace, which generates negative pressure through the three-way water flow and effectively inhibits the escape of harmful gases, eliminating the need to install toxic gas fume hoods in the laboratory; The entire digestion process of the sample can be completed in about 45 minutes.
The working water for the distiller is tap water. During the operation of the instrument, the rising water level in the evaporator causes the electrode to generate current, which heats the water and generates steam. The digested sample is distilled using pressure steam, converting the ammonium sulfate produced during digestion into ammonia and reacting with boric acid to produce ammonium hydrogen borate. The distillation process of a sample can be completed in about 7 minutes.

Main products of KDN-04A crude protein analyzerTECHNICAL INDEX
1. Testing varieties: grain, food, dairy products, beverages, soil fertilizers, feed, and other agricultural and sideline products;
2. Measurement range: nitrogen content 0.05% -90%;
3. Working voltage: AC 220V, 50HZ;
4. Digestion time: 45 minutes/batch distillation time: 7 minutes/piece;
5. Power: Four hole digester 1200W, distiller 800W,
6. Weight: 9kg for four hole digester, 23kg for distiller
7. Volume: Four hole digester 630 × 205 × 170 mm3; Distiller 380 × 330 × 820 mm3.