Abstract: A dissolution generator apparatus includes: a dissolution generator, including: a housing shell; a powder support screen assembly extending across an interior of the housing shell and configured to support a column of powder; a pressure mechanism disposed adjacent the powder support screen assembly; a spray delivery assembly located adjacent the powder support screen assembly opposite to the pressure mechanism, the spray delivery assembly comprising a spray nozzle configured to spray a solvent through the powder support screen assembly; a duct having a first end in fluid communication with the housing shell, and a second end; a dissolved powder reservoir in fluid communication with the second end of the duct; and at least one recirculation pump disposed in fluid communication with both the dissolved powder reservoir and the spray delivery assembly, so as to form a fluid recirculation loop between the dissolved powder reservoir and the spray delivery assembly.