The fibres are extremely pure due to a complex extraction process during production. The fineness of the individual product types is determined by special grinding and fibrillation of the various fibres.

Medium-length fibres for fine filtration. These fibres are strongly fibrillated and are suitable for second prefilling as well as for continuous dosing. The strong filtration results in a good internal structure (spatial structure) in the filter cake, in which finer product types can be stably embedded. The turbidity reduction is high and the fibre type is intended for fine filtration.