The Kjeldahl nitrogen analyzer calculates protein content by measuring the nitrogen content of a sample, based on the principle that the nitrogen content of protein is constant. It is widely used to analyze nitrogen or protein content in samples such as food, crops, seeds, soil, and fertilizer.

How to calibrate a nitrogen analyzer?

The calibration process for a nitrogen analyzer involves multiple steps, each requiring rigorous control. A visual inspection of the instrument is the foundation of calibration, ensuring it is free of damage and contamination. Calibration using a standard nitrogen source ensures that the instrument's test results are consistent with the standard values.

Test with samples of varying concentrations, compare the actual measured values with the expected values, and record the data to confirm whether the instrument's performance is within an acceptable range.

When calibrating a nitrogen analyzer, other performance parameters should also be considered, such as the degree of automation, stability, and repeatability, as these directly impact the instrument's overall performance. Therefore, calibration should be performed by experienced professionals, ensuring that every detail adheres to standard operating procedures.

Kjeldahl apparatus calibration is a key step in ensuring test accuracy and experimental reliability, and must be performed strictly in accordance with standard operating procedures. Through scientific calibration methods and ongoing maintenance, instrument errors can be effectively avoided and data accuracy can be improved.