Automatic Kjeldahl Nitrogen Analyzer: A New Choice for Efficient and Worry-Free Laboratory Operations

The HGK-51 Automatic Kjeldahl Nitrogen Analyzer from Shanghai Heguan Instrument Co., Ltd. represents advanced nitrogen/protein content analysis technology, which has been widely applied in the production and testing of industries such as food, fertilizers, feed, water samples, soil, and biochemical agents, earning high praise from users. It offers significant advantages in safety, accuracy, and durability, primarily reflected in: reliable safety protection, intelligent operation, and a series of other core features.
I. Safe and Reliable Design
The entire unit is constructed with ABS anti-corrosion material, equipped with door switch protection and digestion tube in-place detection functions, which not only effectively prevents direct damage from highly corrosive reagents to the equipment but also ensures operator safety. Through the use of independent liquid pumps for acid and alkali distilled water dispensing, the fully enclosed gas and liquid path design thoroughly eliminates potential instability and safety risks associated with pressure-based liquid addition.
II. High Precision and Stability
Comparative testing expands the measurable nitrogen content range in samples to 0.06–240 mgN, with repeatability of nitrogen content measurements for all sample components reaching 99.5%, and RSD ≤ 0.5%, ensuring high accuracy and reliability in nitrogen content determination. Precise distillation control (adjustable from 0-1500W) allows distillation times of only 3-9 minutes per sample, with support for delayed distillation (up to 3600 seconds), making it particularly suitable for complex samples such as fertilizers. Deep exploration of intelligent control and full embodiment of user-friendliness truly enable the instrument to work "for people."
III. Intelligent Operation and User-Friendly Interface
Equipped with a 7-inch touchscreen and an efficient 32-bit chip, the system provides voice fault alerts, interactive operation guidance, and even displays instructions upon startup, significantly lowering the barrier to use. With fine-tuned distillation control, the system allows free customization of over 1,000 distillation programs and sample data parameters, such as distillation time, power, and water replenishment ratio, offering great convenience to distillation enthusiasts.
IV. Water Saving and Reagent Management
The distillation process automatically activates condenser water at startup and shuts it off after distillation, greatly reducing water waste. Shortages of various reagents and cooling water are promptly detected and corrected through corresponding alarm systems, preventing the generation of erroneous data.
V. Durability and Low Maintenance
With a deep understanding of the high-temperature, high-pressure, and highly corrosive working environment of Kjeldahl nitrogen analyzers, we have turned these unique challenges into opportunities by adopting specialized pipeline materials and advanced technologies, enabling "three-year pipeline maintenance-free" long-term use for users. Additionally, we provide free software upgrades for the instrument within three years of use, significantly reducing long-term operating costs.
VI. Summary
The HGK-51 Automatic Kjeldahl Nitrogen Analyzer, with its core selling points of reliability, intelligent operation, and long-term maintenance-free performance, is especially suitable for high-frequency testing and diverse sample testing environments, making it an industry-preferred device that balances efficiency and safety.