The capture of sedimenting dust

For the capture of the dust fraction from imissions with large particles (diameters of above 10 pm) it is possible to use  

The equipment shown in Fig. 5.23 (a type standardized in England) consists of a funnel and collecting vessel. The instrument is fixed in a stand, so that the funnel opening is at a level of 1.5 m above the ground. The funnel is protected from birds by wire netting. Because the device also captures precipitations, the sample of solid particles is obtained by the filtration or by the evaporation of water. 

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