A method and assembly for attaching to a container and configured to reduce the volume of a droplet of fluid ejected from the container wherein the assembly is securable to the container without alteration of the container and wherein the volume of the droplet is reduced on a microliter scale. The assembly (10) comprises a base (20) for securing a neck (84) of the container (80)； a tip (40) for securing over a dispensing outlet of the container (80)； and optionally a cap (60) for securing over the tip (40) and connecting to the base (20).
