This example shows that the performance of scrubbers
is only as good as the droplet separator. The performance
of the filter depends also on the selection of the filter
medium. More than 20 filter media were tested over a
period of several days. Currently, it is too early to define
guidelines for the selection of the filter media. Both needle
felts and nonwoven fabrics can be used. Filter media
equipped with a membrane, however, led to high pressure
drops above 100 mbar and cannot be recommended.