An analytical instrument exemplified by a time-of-flight mass spectrometer that includes the monolithic construction of multiple electrodes in a single structure where the points at which the voltage is imparted are connected resistively. The substrate on which the resistive surface is deposited is not only insulative but also, optionally, has characteristics that allow it to be used as the vacuum containment vessel. Because there is no separation between electrodes of different voltages and because the vacuum vessel is insulative, there is a significantly reduced possibility of unexpected electrical discharge which can damage an analytical instrument.
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