BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective illustration showing a lid for containing volatile esters dispersing from an aromatic compound held above a container in accordance with one embodiment of the present invention;
FIG. 2 is a side view illustration showing the lid attached to the rim of the container;
FIG. 3 is a side view illustration showing a lid with internal lateral stabilization features and a container in accordance with another embodiment of the present invention;
FIG. 4 shows a bottom view of the lid element disclosed previously in FIG. 3;
FIG. 5 is a side view illustration showing a lid with external lateral stabilization features and a container in accordance with yet another embodiment of the present invention;
FIG. 6 shows a bottom view of the lid disclosed previously in FIG. 5;
FIG. 7 is a perspective illustration showing a non-porous lid above a container in accordance with another embodiment of the present invention;
FIG. 8 is a perspective illustration showing a porous lid covering above a container in accordance with another embodiment of the present invention; and
FIG. 9 illustrates a method of volatile ester identification training in accordance with yet another embodiment of the present invention.