AGITATION METHODS
There are countless casual forms of agitation: manual paddling, convection currents from
heating and cooling coils, the disturbances caused by barrel rotation and movement of work
in the tank, the solution motion resulting from the use of a filter pump, the mixing induced
by the evolution of hydrogen at the cathodes, and so on. But in terms of practical engineered
systems, we can restrict the discussion to air agitation, cathode oscillation, propeller type
mixers, and circulation pumps--with a caveat that ultrasonic transducers and pulse plating
rectifiers, each covered elsewhere in this Guidebook, are also actually agitation units in their
own right.