Abstract: A rack for receiving objects delivering liquids and dirts, comprising at least one stackable module having a T-shaped cross-section. The module has walls defining a vertical passage, a tray outwardly projected from these walls making the vertical passage. The tray is horizontal, has an inclined bottom, and a perforated plate for receiving objects delivering liquids and dirts, supported by the tray, over the inclined bottom of that tray. A way to exit liquids and dirts is provided from the inclined bottom of the tray, towards and within the walls defining the vertical passage. The walls defining the vertical passage terminate at opposite ends into coupling for coupling with another similar module: for instance a male-female coupling. Thereby the modules are stackable for making a rack and are held by the walls defining the vertical passage. Preferably the rack has a support module having also walls defining a vertical passage.