Overview

Nitrogen Analyzer LMNA-A402 automates Kjeldahl distillation and titration to measure nitrogen and protein in digested samples. The range covers 0.1 to 240 mg N. Each test takes 5 to 10 minutes, with recovery of at least 99.5%. Four KNF pumps dose reagents, and titration runs at 2.0 uL per step. Solid samples up to 5 g and liquids up to 20 mL are accepted. The run stops if distillate temperature turns abnormal. The unit stores 1000 results and prints each run.

Features :

• The analysis can be done in 5 to 10 mins within the measuring range of 0.1 mg to 240 mg N.
• High-precision working is attained by four KNF pumps are used for dozing and liquid volume measuring.
• Receiving cup cleaning, alkali pipeline cleaning and other cleaning functions are pre-installed.
• High titration accuracy of the samples can be up to 2.0μL/step.
• It is provided with printer to save the results of the experiments.
• Programmed washing ensures worker protection and save time.
• Exterior titration cup strategy provides worker real-time regulating of the test procedure.
• Extraordinary-Quality charging pump and titration confirm test results precision.
• The temperature of the distilled liquid is continuously monitored. To assure the correctness of the experiment's outcome.
• The device will cease working if the temperature of the distilled liquid is abnormal.

Specifications :

Measuring Range	0.1 mg to 240 mg N
Analysis Time	5 to 10 min/sample
Reproducibility	Average value relative error ±0.5%
Recovery	≧99.5%
Burette Volume	2.0 μL/step
Sample Capacity	solid≦5 g/sample, liquid≦20 mL/sample
Water Consumption In The Distillation Process	1.5 L/min
Data Storage Capacity	1000 groups
Power Supply	220 VAC±10%, 50 Hz
Power	2 Kw
Net Weight	38 Kg
Dimensions (L×W×H) mm	455×391×730

Applications :

Quantitative determination of nitrogen in chemical substances. Measure the amount of protein in the grain used to produce beer. Estimating the protein content in foods, feed, beverages, and many other samples. Measure nitrogen in organic and inorganic samples in the chemical industry, the pharmaceutical industry and in environmental samples.

Selection Guide :

Nitrogen Analyzer LMNA-A402 is an advanced analytical instrument designed for accurate nitrogen determination in various organic and inorganic substances. It is widely used in applications such as agricultural soil testing, fertilizer analysis, environmental monitoring, food quality control, pharmaceutical research, and chemical production. Based on research studies, this analyzer provides accurate nitrogen quantification through methods like the Dumas combustion technique, ensuring rapid analysis with high reproducibility. It is especially suited for laboratories that require high-throughput, automated nitrogen analysis with minimal sample preparation. It is certified for compliance with international standards such as ISO, AOAC, and CE, making it a reliable choice for regulatory and quality assurance environments. Customers in academic research institutions, fertilizer manufacturing units, environmental testing labs, and food safety agencies can confidently select this model based on its performance, validated applications, and industry certifications.