Abstract: A device for preparing a nutritional composition by supplying water to ingredients provided to the device includes a pump connected to an integrated or external water supply, and a water discharge head designed for providing water to a cartridge containing ingredients for interaction between water and the ingredients in the cartridge. The pump and the water discharge head are in water communication via a water flowpath, and the pump can supply water under pressure through the water flowpath The device includes a rigid filter assembly having at least one antimicrobial filter membrane and filter enclosing member. The filter assembly and the filter enclosing member are complementary configured such that the filter assembly is insertable into the filter enclosing member across the water flowpath in a fluid tight manner before the water discharge head, and is removable from the filter enclosing member.

Abstract: The invention concerns a water treatment unit comprising: —a compartment (1) presenting an upper water inlet (6) and a bottom water outlet (7), —a water distribution plate (3) dividing the compartment in an upper part (2) and a lower part (4), said lower part containing a water treatment substance (5) and said water distribution plate presenting a plurality of holes (8) in the whole plate, said plurality of holes having such a distribution that water introduced through the upper water inlet is induced to flow through the holes that are the more distant from the compartment upper water inlet (6).

Abstract: A filter cartridge for a beverage machine that includes a housing with an inlet and an outlet and with filter material located in the housing. Furthermore, an upper outlet opening for filtered water and a lower outlet opening for filtered water are both connected to the outlet. Advantageously, the upper outlet opening is located at an upper end of the channel, and the lower outlet opening is located in the channel between the upper outlet opening and the outlet. Preferably, the upper outlet opening is located at an upper end of the channel, and the lower outlet opening is located in the channel between the upper outlet opening and the outlet.

Abstract: The present invention proposes a device for preparing a nutritional composition by supplying water to ingredients provided to the device comprising a pump (2) being connected to an integrated or external water supply (1), a water discharge head (4) designed for providing water to a cartridge containing ingredients (7) for interaction between water and the ingredients in the cartridge (7), wherein the pump (2) and the water discharge head (74) are in water communication via a water flowpath (50), whereby the pump can supply water under pressure through the water flowpath, a rigid filter assembly (20) comprising at least one antimicrobial filter membrane (30) and filter enclosing means (40a, 40b), wherein the filter assembly (20) and the filter enclosing means (40a, 40b) are complementary configured such that the filter assembly (20) is insertable into the filter enclosing means (40a, 40b) across the water flowpath (50) in a fluid tight manner before the water discharge head (4), and is removable from the filte