A system (100) is disclosed for administration of a medical fluid, which comprises a receptacle (106), having at least one of its outlets/inlets furnished with a male Luer tip fitting a vented connector (10), attached to the male Luer tip fitting, and a casing for the receptacle. The casing comprises two complementary subunits (102, 104) having eyelet tab portions (103, 105). The connector comprises an axial portion (12) and a bifurcating portion (14). The axial portion further comprises an interior post (16) and an exterior housing (20), the post forming a continuum with an air inlet (18). An the air inlet is furnished with a filter or a membrane element of a first type, selectively allowing a flow of air to pass therethrough while preventing an outflow of fluids therefrom. The casing, encompassing the receptacle, is hung from the eyelet tab portions to assume an upright position, whereby a continuous administration of the content of the receptacle is achieved by maintaining an inflow of air thereto.