In the permanent section about professional devices, we will tell you about the Aspirator

Aspirator-sampling device (air sampler, aspirator) is designed for taking air samples to absorption devices.
The principle of operation of the device is mechanical, with the help of a special pump, a given volume of air passes through special sorption tubes or filters, in which a particular contaminant settles.
After sampling, the sorption tubes or filters are delivered to the laboratories for analysis.
Aspirators are installed at 55 stations of manual sampling of atmospheric air of RSE "Kazhydromet".