CO2 balance in N2 calibration Gas is a calibration gas that is a gas standard material used to calibrate carbon monoxide detection instruments. It is a mixture of gases, the main components of carbon monoxide and nitrogen. The content of carbon monoxide is usually 100ppm (parts per million), or other concentrations, depending on the calibration needs of different gas chromatographs. The standard gas is prepared by mixing carbon monoxide with nitrogen to form a standard gas with a specific concentration and properties. The advantage of this standard gas is that it does not contain any other chemical composition, thus ensuring that there will be no interference with the calibration of the gas chromatograph.

In gas chromatograph calibration, carbon monoxide standard gas in nitrogen is used to calibrate the instrument to determine whether its performance meets the requirements of the relevant standard or technical specification. This standard gas usually has a carbon monoxide content of 100ppm, and the principle is that by mixing carbon monoxide with nitrogen, a standard gas with a specific concentration and properties is formed. The advantage of this standard gas is that it does not contain any other chemical composition, thus ensuring that there will be no interference with the calibration of the gas chromatograph.

The method for calibrating a gas chromatograph to use carbon monoxide standard gas in nitrogen is as follows:

First, carbon monoxide standard gas in nitrogen is introduced into the column. Here, carbon monoxide is completely separated from the rest of the air. The isolated carbon monoxide is then introduced into a detector for determination. In this process, standard gases play an important role. It has good uniformity and stability, can preserve the chemical composition and characteristic quantity value of the substance, and transfer its quantity value in different space and time. In this way, it is possible to obtain metrological traceability of the results of various actual measurements by applying standard gases.

Finally, according to the test results, the instrument is adjusted to achieve accurate measurement results. The whole calibration process needs to be carried out in strict accordance with the operating procedures to ensure the accuracy and reliability of the calibration.

Since carbon monoxide is a toxic gas, proper safety measures need to be taken when calibrating with this standard gas to ensure operator health and safety.