The method for determining the protein content is Kjeldahl method, and the professional instrument for determining the protein content is Kjeldahl . Kjeldahl is a measuring instrument based on the classic Kjeldahl method, which means that the principle is Kjeldahl method, but it is simpler to operate than Kjeldahl method. a lot of. Let's take a look at the Kjeldahl method and the Kjeldahl analyzer. 1. Kjeldahl method The Kjeldahl method is a method for determining the amount of total nitrogen in a compound or mixture. The rationale for this method is that the nitrogen content of the protein usually accounts for about 16% of its total mass (12% to 19%). The total protein content of the substance can be estimated by measuring the nitrogen content of the substance (assuming that the nitrogen in the substance is derived from the protein), ie: protein content = nitrogen content / 16%. The Kjeldahl method is used for the determination of the protein content of all animal and plant foods. 2, Kjeldahl nitrogen analyzer Kjeldahl nitrogen analyzer is a nitrogen measuring instrument developed for the convenience of operation and reducing manual error. The principle is Kjeldahl method. The measurement process is still. Under the condition of catalyst, the sample will be organically digested with concentrated sulfuric acid. The nitrogen is converted into an inorganic ammonium salt, and then the ammonium salt is converted to ammonia under alkaline conditions, distilled with steam and absorbed by an excess of boric acid solution, and then titrated with standard hydrochloric acid to calculate the amount of nitrogen in the sample. In operation, Kjeldahl simplifies the process and improves safety. Both automation and safety are higher than Kjeldahl. Therefore, with the promotion and popularization of instruments, many modern industries measure protein content. The Kjeldahl nitrogen analyzer is used, and the Kjeldahl method is rarely used. It is worth mentioning that with the rapid development of control technology, Kjeldahl is gradually developed from the former semi-automatic to the now fully automatic, such as automatic distillation control, automatic watering, automatic water level control, automatic water stop, etc. An instrument performs measurement work, which not only greatly improves the efficiency, but also has higher accuracy and safety, and can well protect the safety of operators. 17 Inches Automobile Magnesium Wheels 17 Inches Automobile Magnesium Wheels,Forged Wheels Audi,De Forged Wheel,17 Inch Rims Shamora Material Industry , https://www.shamorawheels.com
