| 摘要 |
<p>A wick-based delivery system includes a container (1) for holding a liquid. The container (1) has an opening at its top surface and is non-vented. A porous wick (3), having a predetermined mean pore size of less than about four microns, and preferably less than about one micron, extends through the opening in the container. When the liquid is added to the container, a lower region of the porous wick is in contact with the liquid and an upper region of the porous wick is exposed to the ambient air. The opening in the container is also substantially sealed by the insertion of the porous wick.</p> |
