Kyrgyzstan nitrogen analyzer and melamine indissoluble bond

Kyrgyzstan nitrogen analyzer and melamine indissoluble bond
The melamine incident of that year, although nearly two years have passed, but in retrospect, it is still chilling. The protein in melamine adulterated milk powder increases the protein content of milk powder. This involves the chemical determination method of protein - Kjeldahl method. The Kjeldahl is developed using this method. If there is no melamine incident with Sanlu milk powder, the protein content of milk powder will not be so concerned by many people, and related instruments such as the Kjeldahl analyzer will not become the equipment that people compete to purchase overnight.
Kjeldahl is also divided into automatic nitrogen determination instrument and semi-automatic nitrogen determination instrument. This is determined by whether or not the nitrogen analyzer contains a digester. Digestion furnace is dedicated to the digestion of the sample, the sample can only be digested after the next step of distillation, titration and other steps. The principle of the Kjeldahl analyzer is this: In the presence of a catalyst, the protein-containing material is first digested with concentrated sulfuric acid so that the organic nitrogen is converted into an inorganic ammonium salt. The ammonium salt is then converted to ammonia under alkaline conditions and absorbed with acid. Afterwards, titration is performed with the relevant reagents, and the amount of nitrogen in the sample is calculated using the reagent used, and there is a certain proportional relationship between the content of nitrogen and the content of the protein. The melamine nitrogen content is much higher than the protein nitrogen content, in the milk powder doped with a certain percentage of melamine, can increase the protein content of milk powder under the same conditions, and protein content is one of the most important factors to determine the quality of milk powder. Some unscrupulous merchants have exploited the loopholes in the protein measurement methods and made them opportunistic, resulting in serious consequences. The melamine incident also tells us that the safety of food needs to be maintained by all people in the society. Food safety concerns human safety. Only healthy and environmentally friendly foods can provide everyone with a good environment for people to concentrate their work and life.

USB dehumidifier

Usb Powered Dehumidifier,Usb Rechargeable Dehumidifier,Usb Dehumidifier For Car,Dehumidifier Usb Powered

Yuyao Veedai Electrical Appliance Co., Ltd , https://www.coycyqi.com