The QPA-5LP series air generator is an economical and practical laboratory air source product. The instrument adopts an oil-free compressor, which is equivalent to a domestic refrigerator compressor effectively improving air quality and instrument service life. Compared to traditional laboratory air cylinders, safety has been greatly improved. Therefore, using it instead of laboratory steel cylinders is a good choice. It has very simple requirements for the surrounding facilities of the work environment, as long as a standard power supply is provided to operate and a stable pressure of dry air is continuously provided