A transdermally absorbable preparation that even when a drug with poor solubility in a base is added in high concentration, is stable over time and can suppress crystallization of the drug, excelling in transdermal absorbability. The, device is further configured to report to at least one other device at least one metric related to an availability of each of the one or more selected communications channels for communications. In exemplary embodiments, the reactor is modified to include an evaporator portion including an opening in the stator near the end of the reactor and a series of fins placed in the opening. A processor then fetches a first instruction from code that is to be executed. The bottoms stream is passed to a dividing wall distillation column where the polyisopropylbenzene recycle stream is removed from an intermediate point; a cumene product stream is removed from a first end, and a heavy aromatic stream is removed from a second end.