Above we introduced the hazards of inferior refrigerants. Below, the staff of Chlorodifluoromethane R-22 will introduce how to identify inferior refrigerants. Friends who want to know will follow us to take a look at the following article.

　　1. Please be sure to purchase Chlorodifluoromethane R-22 produced by regular manufacturers through regular channels. If the price of refrigerant is significantly lower than the market price, high vigilance should be aroused.

　　2. If you have the test conditions, it is recommended to check the purity and acidity of the refrigerant before using it. It is not recommended to use the refrigerant whose test results are significantly lower than the industry standard. Note: The purity of qualified Chlorodifluoromethane R-22 should be greater than 99% (the purity of a good quality refrigerant is greater than 99.8%), and the acidity (in HCL) should be less than 0.0001.

　　3. If you do not have the refrigerant detection conditions, it is recommended to perform a simple inspection before using the refrigerant. The simple inspection method can be:

　　[1] Turn the refrigerant tank upside down and release a small amount of refrigerant onto a piece of white paper. If there are obvious impurities or liquid water on the white paper, it means that the refrigerant is of poor quality and is not recommended.

　　[2] Connect the pressure gauge to test the pressure of the refrigerant bottle, and check whether the pressure in the bottle is within the normal range of the refrigerant temperature and pressure characteristics table. If the pressure is abnormal, it is not recommended. And when the refrigerant is half used, the pressure in the bottle can be tested again. For a single-component refrigerant such as R22, the two measured bottle pressure values ​​should be very close, but for inferior refrigerants, multiple components are usually mixed. After the internal refrigerant is used, due to the change of the composition ratio, the bottle pressure usually has a big difference. If such a phenomenon is encountered, it is recommended to stop the refrigerant immediately and discharge the refrigerant that has been charged into the system to avoid it. Pollution system.