The filter cells of the new double-layer stacked disc cartridges have two different depth filter sheets, the first with a coarser retention rate than the second. Coarser particles are captured by the first filter sheet and finer particles by the second. The stacked disc cartridges are available in diameters of 12 in and 16 in and a shorter version at just 185 mm (7 in) in height, is also available. This allows users to install three of the shorter stacked disc cartridges in a two-fold standard housing.

The new BXS range combines the depth filter sheets of the BECO Standard or CPS ranges, offering almost complete coverage of retention ranges from 30 to 0.1 µm.  Its good clarification performance allows reliable removal from particles to microorganisms. The perfectly balanced ratio of surface and depth filtration, as well as the adsorption performance of the system are important.