The first point is to understand the gas numbering

When selecting standard gases, it is still necessary to check whether there are certificates and production licenses, and to hold a unified number certified by relevant national departments. Generally, the number can be used to determine whether the gas is classified as Level 1 or Level 2. If necessary, the office of the National Material Management Committee can also be consulted to confirm whether the gas product can meet the relevant standards, because only products that meet the corresponding standards can be used with confidence. 

Secondly, the composition of Hubei standard gases

If you want to choose a standard gas, you should also have a good understanding of the composition of the gas. The composition of Hubei standard gas is still similar to the tested sample, and there may be differences in the composition of certain analytical methods. However, due to the complexity of the tested object and the limitations of Hubei standard gas in terms of variety, it may be difficult to achieve consistency. Therefore, in such cases, it is necessary to first understand the composition of the gas, and try to choose gases with similar compositions as much as possible. Accuracy can be evaluated through corresponding methods. 

Thirdly, pay attention to the gas content

The content of standard gas is also a factor that users need to consider when choosing. Instrumental analysis is generally a relative measurement, and the standard curve method is usually directly used for quantification. After determining the standard curve, linearity can be formed directly through the origin, or quantification can be carried out directly through single point correction. As long as the content is close to the content of the tested sample, the uncertainty caused by poor linearity can be reduced, and subsequent measurements can be completed, ensuring the accuracy of the measurement results. Wuhan Zhongxin Ruiyuan Gas Co., Ltd. Service Line: 17371457003

Fourthly, consider what the degree of certainty is

Once a standard gas is selected, the uncertainty within it can lead to certain errors in the measured component results. So in the process of selection, uncertainty should also be considered. Generally speaking, the smaller the uncertainty, the better. If the value is smaller than the expected result, there is no need to worry about errors. However, if the uncertainty is larger, more attention should be paid to errors, which can easily lead to larger errors. This is also something that needs to be understood. 

Because standard gas is mainly used for testing, if users want to make a choice for such products, they should consider these requirements, and then confirm whether the product can meet these major requirements. As long as these requirements can be met, they can make a choice with confidence. Also, because there are many manufacturers selling products on the market, users need to make corresponding choices, consider the strength of the manufacturer, the stability of the product, and other aspects to bring satisfactory products to themselves. 

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