Abstract: The phase-change accommodating rigid fluid container disclosed herein includes a variety of features that protect the container from phase changes of a fluid stored therein. As a result, the container may be in direct contact with the fluid without any flexible membrane or bag there between. For example, the fluid container may include one or more of matched pairs of recesses for physical manipulation of the container, stiffening ribs extending between the recesses, and input/output assemblies acting as inputs for fluid into the container, outputs of fluid from the container, and vents for pressure equalization of the container.

Abstract: The phase-change accommodating rigid fluid container disclosed herein includes a variety of features that protect the container from phase changes of a fluid stored therein. As a result, the container may be in direct contact with the fluid without any flexible membrane or bag there between. For example, the fluid container may include one or more of matched pairs of recesses for physical manipulation of the container, stiffening ribs extending between the recesses, and input/output assemblies acting as inputs for fluid into the container, outputs of fluid from the container, and vents for pressure equalization of the container.

Abstract: A device for holding and controlling the temperature of a corrosive chemical processing bath. The device has a tank having a bottom intimately covering thermally conductive fins, a heat sink thermally connected to the fins and heaters, connected to the heat sink, for changing the temperature of the fins. Preferably the device is produced by rotationally molding the tank about the fins coated with a polymeric material thereby covering the fins and forming an integral seamless tank.