According to one embodiment, one of two connectors, and a circuit board on which the other of the connectors is mounted are prepared. The apparatus includes a separation unit and a reservoir unit. The substrate and the substrate support are raised against a plurality of sealing surfaces of corresponding sleeves of a plurality of flow cells of a combinatorial processing chamber. The system still further includes a fuel pump having an inlet and outlet. Also claimed is a medium encoded with a machine-readable computer program code for reducing artifacts in an x-ray image, the medium including instructions for causing controller to implement the aforementioned method.