Abstract: A combined unit (2) for containing detergent or other chemical compounds, mainly for washing or dishwashing machines, the combined unit comprises at least one pocket (4) configured to contain at least one compound intended for at least one phase of a washing program. The combined unit comprises two sides, an inlet side (6) and an outlet side (8), and the sides of the unit (2) are intended for inlet and outlet liquid, respectively, into and out from the combined unit. The inlet side and said outlet side are constituted by liquid permeable filter members. In one embodiment the inlet side filter member is denser than the outlet side filter member, and that the inlet side filter member is capable of filtering out micro fibres in the inlet liquid. Also provided is a machine adapted to use the combined unit.