What are the advantages of a miniature air pump?

Compared with large vacuum pumps, it mainly has the following advantages:
Compact size, low noise, low power consumption, easy to operate, portable, maintenance free, can operate continuously for 24 hours, and also allows the medium to be rich in water vapor. Most importantly, because it is dry and oil-free, it does not require vacuum pump oil or lubricating oil, so it will not contaminate the working medium, interfere with the analysis of the medium, and so on. And the price is relatively much cheaper.