KDN series Kjeldahl analyzer similarities and differences

KDN series Kjeldahl analyzer similarities and differences

KDN series Kjeldahl has several models: KDN-04A Kjeldahl, KDN-04K Kjeldahl, KDN-08A Kjeldahl, KDN-08C Kjeldahl, KDN- 20C Kjeldahl nitrogen analyzer and other five models. Each model corresponds to a different function, but they are all capable of determining the content of a protein in a substance and are measured using the classic Kjeldahl method. KDN-04A Kjeldahl, KDN-04C Kjeldahl, KDN-08A Kjeldahl, KDN-08C Kjeldahl, KDN-20C Kjeldahl are commonly used to determine seeds, Nitrogen content in food, food, dairy products, beverages, feed, soil and other agricultural and sideline products.

The Kjeldahl method is the most common and most common method for determining the protein content or nitrogen content of a substance. The principle of the Kjeldahl method is that the protein is a nitrogen-containing organic compound. The food is heated and digested with sulfuric acid and a catalyst to decompose the protein, and the decomposed ammonia is combined with sulfuric acid to produce ammonium sulfate. Then alkalized distillation to ammonia free, absorbed with boric acid and then titrated with sulfuric acid or hydrochloric acid standard solution, according to the consumption of acid multiplied by the conversion factor, which is the protein content. That is, the nitrogen content is calculated first, and then the protein content is calculated based on the conversion relationship between nitrogen and protein.

KDN-04A Kjeldahl, KDN-04C Kjeldahl, KDN-08A Kjeldahl, KDN-08C Kjeldahl, KDN-20C Kjeldahl is a semi-automatic determinator, Using a microcomputer for process control. KDN series Kjeldahl nitrogen analyzer has automatic distillation control, automatic water adding, automatic water level control, automatic water stop and water pressure too low alarm. At the same time KDN series Kjeldahl nitrogen analyzer can measure nitrogen content in the 1mgN ~ 200mgN (mg nitrogen) material. The recovery was 100±1% (relative error, including digestion); Distillation rate: <5 minutes/sample.

The following list analyzes the similarities and differences between KDN series Kjeldahl analyzers.