A high pressure cleaning apparatus provides a complete assembly mounted on a unitary base for applying high pressure water to two cleaning wands through two separate flexible hoses. A plurality of address electrodes are formed on the first substrate along a first direction, and a plurality of barrier ribs are mounted between the first and second substrates and defining a plurality of discharge cells that are formed into a plurality of rows along a second direction which is substantially perpendicular to the first direction. The plurality of test contactor pins include a first set of power pins, a second set of ground pins, and a third set of signal pins. Targeted data sets are defined as data sets containing certain reference values and are retrieved using a data set retrieval procedure. Furthermore, as a consequence of using a single layer of metal for the gates of both type of devices, the terminal electrodes of NFETs and PFETs can be butted with each other in direct physical contact. The processor executes a physiologic marker program out of the memory.