The contaminated air is collected by the collection

The contaminated air is collected by the collection unit (extractor hood, suction arm, hose, etc.) and transported into the filter unit directly or through a pipe or flexible hose. In the filter unit, the contaminant particles are filtered into different filter levels according to their size.

Filter units that are equipped with a molecular sieve (for example activated carbon filters/BAC) remove the majority of gaseous contaminants. Afterwards the purified air can either be circulated back into the work area or diverted outdoors through an exhaust duct. Recirculating the air in the work area is a way to easily reduce energy costs. 

The products of the BF-series (BASIC FILTRATION) were specially de-signed as basic models and include all of the essential functions of an extraction and filter system, combined with an excellent price-perfor-mance ratio.

The devices are available with different motor concepts, filter equipment and operating options. The TBH modular device design and all of its advantages were also used as the focus during the development of this device series.