Abstract: The invention concerns a separator, of the type comprising a sheet provided with openings for centering the necks (3) of a layer of bottles (8) and protrusions (5) extending from the upper face of the sheet to center the bottoms (4) of a superposed layer of bottles, characterized in that each opening is defined, on the one hand, by at least two projections 12 presented by the sheet to abut on the shoulder (23) of the bottle and, on the other hand, by a cap 11 whose height is adapted to shroud the neck (3) of the bottle, when the projections (12) abut on the shoulder of the bottle.