Figure 1:

Source control measurement system. The system consists of an aerosol generation system, a bellows and linear motor to produce the simulated coughing and breathing, a pliable skin headform on which the source control device is placed, a 136 liter collection chamber into which the aerosol is coughed or exhaled, and a cascade impactor to separate the aerosol particles by size and collect them. The system is oriented vertically as shown to minimize the loss of aerosol particles due to settling before collection. The system is described in more detail in Lindsley et al. (2021).