In various fields such as food, feed, medicine, and agriculture, nitrogen and protein content are core indicators for evaluating product quality, nutritional content, and safety performance. The traditional Kjeldahl nitrogen determination method has a complicated operation process, multiple manual intervention steps, and a long analysis cycle, which makes it difficult to meet the needs of modern detection fields for efficient, accurate, and standardized analysis. The fully automatic Kjeldahl nitrogen analyzer is based on the classic Kjeldahl nitrogen determination method, integrating the entire process steps of reagent addition, distillation, absorption, titration, etc. through automation technology, combined with accurate detection and data processing systems, to build an integrated solution for nitrogen and protein analysis, providing efficient, reliable, and safe technical support for various industries' detection work, and promoting the transformation of the detection process from manual operation to automation and standardization.

The scientific detection principle and fully automated process design are the core foundation for accurate and efficient solutions. The instrument strictly follows the core logic of Kjeldahl nitrogen determination method and completes the full process analysis for the digested sample: the ammonium sulfate in the digested sample reacts with the subsequent automatically added alkaline solution to generate ammonia gas. The ammonia gas enters the condenser under steam drive and is condensed before being introduced into the absorption solution pre added with boric acid. During the absorption process, the indicator in the absorption solution changes its characteristic color, and the instrument immediately starts the automatic titration program. The titration endpoint is accurately determined by the color sensor. Finally, based on the consumption of standard titrating acid, the nitrogen content of the sample is automatically calculated and output, which can also be directly converted into protein content. The entire analysis process does not require manual intervention, and is automatically completed according to the preset program from reagent addition to result output. This not only greatly reduces the skill threshold and labor intensity of operators, but also effectively avoids errors caused by manual operation, ensuring the stability and consistency of detection results.

Excellent performance parameter indicators provide solid guarantees for the accuracy and applicability of solutions. In terms of detection range, the instrument can cover a wide range of 0.1-240.0mg nitrogen detection, suitable for sample weight requirements of solid ≤ 8.0g and liquid ≤ 30.0ml, and can meet the detection needs of different concentrations and forms of samples. At the level of precision control, the measurement accuracy with a relative difference of ≤ 1% and the repeatability with a parallel difference of ≤ 0.5% ensure the reliability of the detection data; By adopting a high-precision dynamic titration method of 1.0uL/step, combined with precise color sensing endpoint determination technology, the accuracy of titration analysis has been further improved, resulting in a stable recovery rate in the excellent range of 99% to 101%. In terms of efficiency improvement, the single sample determination speed of the instrument only takes 3-9 minutes, which significantly shortens the analysis cycle compared to traditional methods. It can efficiently meet the needs of batch sample detection and is suitable for rapid quality control in production sites and batch analysis scenarios in laboratories.

The humanized design and stable operation guarantee enhance the practicality and safety of the solution. During the operation of the instrument, the consumption of condensed water remains stable at 1.5L/min to ensure a stable condensation effect; The design with a power of ≤ 1500W balances heating efficiency and energy consumption control, and is suitable for a standard power supply environment of 220V 50HZ. It can be put into use without special power supply modifications. In terms of environmental adaptability, the instrument can operate stably in conventional laboratory environments with temperatures ranging from 10-35 ℃ and relative humidity not exceeding 85%, without the need for additional constant temperature and humidity equipment, reducing usage costs. The bare machine weight of 16KG and the compact external dimensions of 405mm × 465mm × 690mm (length × width × height) facilitate laboratory layout planning and mobile adjustment. At the same time, fully automated operations reduce direct contact between operators and chemical reagents, coupled with comprehensive safety protection mechanisms, effectively improving operational safety and reducing experimental risks.

The wide industry adaptability enables this solution to be deeply integrated into multi domain detection systems. In the field of food processing, it can be used to evaluate the protein content of food raw materials and finished products, ensuring the accuracy of product nutrition labeling; In the feed production industry, optimizing feed formulas by detecting nitrogen content can enhance the nutritional value and breeding efficiency of feed; In the fields of tobacco, animal husbandry, and soil and fertilizer, instruments can be used to analyze the nitrogen content of relevant samples, guiding production and planting optimization; In fields such as environmental monitoring, medicine, agricultural research, and teaching, their precise and efficient analytical capabilities can also be relied upon to carry out nitrogen content related detection and research work. Its standardized testing process and reliable testing results not only meet the internal quality control needs of enterprises, but also comply with the compliance requirements of regulatory departments and research institutions, achieving full coverage of multiple scenarios and requirements.

The core value of the fully automatic Kjeldahl nitrogen analyzer solution lies in achieving "precision, automation, and standardization" in nitrogen and protein analysis. By integrating classic detection principles with modern automation technology, the scientific nature of the Kjeldahl nitrogen determination method is preserved, while the efficiency and accuracy shortcomings of traditional methods are compensated for. From precise control of performance parameters to safe and convenient operation processes, from rapid detection of single samples to efficient processing of batch samples, from multi domain scenario adaptation to compliance testing assurance, this solution provides full process technical support for nitrogen and protein analysis in various industries. Against the backdrop of continuously upgrading detection technology and increasing industry quality requirements, the fully automatic Kjeldahl nitrogen analyzer will continue to play a core role in helping various fields improve detection efficiency and quality control levels, and promote high-quality development of the industry.