According to one embodiment, a content providing system of a terminal in a content providing system, a content server is requested to provide specific content. The solenoid portion 10 is constructed by a stator core 12, an electromagnetic coil 14 and a plunger 15. Optionally a buffer may be present in either or both precursor compositions, such that at time of use such active hypohalous acid concentration in the resulting aqueous mixture remains at a sufficient activity level to effect one or more desired benefits against a target substrate for a desired period of time. Reflux to the column can be provided by liquid helium-3 from a conduit or from an overhead condenser. The wash chamber is oscillated about the central axis by time-varying oscillations. An action of the second loop calculates a delay error ) output from the cell of rank i relative to an ideal delay that distributes the total delay of the chain equally to each cell.