Methods for forming a protective polymeric coating on a silicon or silicon-carbide electrode of a plasma processing chamber are provided. An arc splitter stack is provided and has a number of arc splitter plates and into which the arc is passed via guide rails. Methods for making and using the stabilized formulation are also described. This link-quality measure is comparable with at least one predefined value depending on the result of which, the transmission-rate parameter is setable. In a further embodiment, the environmentally improved rearview mirror assembly is substantially free of poly-vinyl-chloride.