Abstract: There is provided an apparatus for separating and accumulating different matters, the apparatus comprising or being adapted to receive at least a first and a second receptacle, and comprising an opening and a movable element splitting the opening area into a plurality of areas to define a first inlet associated with the first receptacle and a second inlet associated with the second receptacle. The moving element can be moved in one direction to enlarge the first inlet while reducing the second inlet and moved in the opposite direction to enlarge the second inlet while reducing the first inlet.