All electroplaters, anodizers and electrocoaters have baths that need to be maintained. One of the most frequent needs in the maintenance procedure is to replenish one or more materials that are depleted as items move through the process. This goal often is accomplished manually based on an operator’s “best guess.” However, a more efficient method is to use meters that regularly and accurately measure parameters such as ampere hours, time, conductivity, pH and other process conditions to determine the precise additions needed at the correct times.