The invention concerns a liquid dispensing head (1) which is designed to be mounted on a bottle for receiving liquid (2), and which comprises a filtering device (26) that forms an interface between the inside and the outside of that bottle (2). The filtering device (26) comprises tubular filters (30) which extend longitudinally to dip into the bottle (2). Said tubular filters are therefore, in particular, tubular filters (30) whereof the wall is formed from a membrane that is selectively permeable to a liquid to be expelled from the bottle (2), produced for that purpose from a hydrophilic material. For the intake of air to compensate for the expelled liquid, the membrane forming the wall of such a tubular filter is made from a hydrophobic material, so as to be selectively permeable to air. The hydrophobic membrane is furthermore a filter against bacteria.La invención se relaciona con un cabezal distribuidor (1) de líquido que se adapta para montarse sobre un recipiente receptor de líquido (2), y que comprende un dispositivo de filtración (26) que forma una interfaz entre el interior y el exterior de dicho recipiente (2)； el dispositivo de filtración comprende filtros tubulares (30) que se extienden longitudinalmente hasta penetrar en el recipiente (2)； en particular es el caso de filtros tubulares (30) cuya pared está constituida por una membrana de permeabilidad selectiva para un líquido que se expulsa del recipiente (2), la cual está hecha para este fin de material hidrofílico； para la entrada de aire de compensación del líquido que se expulsa, se prevé realizar la membrana que constituye la pared de dicho filtro tubular de un material hidrofóbico, para que sea selectivamente permeable al aire； la membrana hidrofóbica es además un filtrante contra bacterias.
