Apparatus and methods to improve signal coupling in downhole inductive transmission elements to reduce the dispersion of magnetic energy at the tool joints and to provide consistent impedance and contact between transmission elements located along the drill string. The fluid delivery system includes a bottle with a concavity in the side wall attached to a body. A composite solution database is searched to determine a color solution as a function of the solution request. The non-level polyester layer and second oil absorption layer form a plurality of housing spaces between them to store the anti-mildew essential oil. The senders rank respective received send requests according to their associated send priorities.