Abstract: A workpiece carrier for holding workpieces through a plurality of liquid immersion stations including, a framework structure defining an interior space, a self-contained tiltable basket module having article compartments defined therein disposed within the interior space of the frame, a pivot member connecting the basket to the frame at a point offset from the central depth of the basket to cause the basket to normally tilt towards its front, a buoyant tank connected to the basket on the side remote from the a pivot member to tilt the basket towards its rear when the workpiece carrier is immersed in a liquid solution, effectively dissipating any air or gas pockets which might have formed in the hollow areas of the workpiece being treated.