A server chassis includes an uninterruptible power supply, and a server including a controller. Values of at least one output parameter corresponding to each combination of values of a set of input parameters are collected. In an embodiment, the process further comprises, after the test run, creating a covering conductive layer on at least one part of the electric contact region contacted by the probe to fill the indentation. The control circuit is operatively connected to the sensor, and adapted for generating a signal output in response to a threshold change in the base level capacitance. Specifically disclosed is an oxidizing agent composition for epoxidation of olefins, which is characterized by containing peroxide which exhibits basicity when dissolved in water and an acid anhydride. The second lower liquid fraction may comprise the heavier liquid with residual amounts of the lighter liquid contained therein.