Abstract: A universal bottle that interfits into a plurality of different housings for liquid vaporization devices. Two of the current commercial devices have specially constructed bottles that are not interchangeable, that is, the bottle intended for use with one of the commercial devices cannot be used with the other device and vice versa. The present bottle is dimensioned so as to interfit into both of the commercial devices and has a neck having an opening and two sets of opposite external surfaces that are dimensioned so that in one orientation, the bottle will fit into one of the commercial devices, and, by rotating the bottle a predetermined amount to another orientation, the bottle can be operatively inserted into the other of the commercial devices. In each instance, a locking system on the bottle cooperates with the housing of the commercial device to retain the bottle in its operative position.