An electrical connection element for providing an electrical connection to a porous material may include a first electrically conductive plate disposed on at least a portion of a first side of the porous material. A precharge device that generates a precharge pressure is located in a reservoir line that leads from the control valve to a reservoir. The authentication code is stored in a user information DB. Conditional branching within the test program in response to conditions in the receive vectors is supported by recognizing several types of error indications and an ability to selectively disable the testing of one or more DUT’s while continuing to test the one or more that are not disabled.