DEVICE FOR DIFFUSING VOLATILE SUBSTANCES TO AMBIENT AIR COMPRISING A WICK WITH PREDETERMINED POROSITY

摘要

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. Aporous wick (3), having a predetermined mean pore size of less than about fourmicrons, and preferably less than about one micron, extends through theopening in the container. When the liquid is added to the container, a lowerregion of the porous wick is in contact with the liquid and an upper region ofthe porous wick is exposed to the ambient air. The opening in the container isalso substantially sealed by the insertion of the porous wick.