It is not possible to provide an exhaustive review of applications for all available recovery technologies in this series. The number of possible combinations of process baths used in industry and the applicable recovery methods are prohibitively large. In addition, the surface finishing field is a particularly fertile one and active with research and development. Consequently, new technologies with potential usefullness in the industry are being announced frequently. Therefore, rather than attempt to list all possibilities, this section will review generalized information on the applicability of established recovery techniques and will illustrate the tradeoffs among those techniques which have attained a reasonable degree of commercial acceptance and practice. This information should provide a logical frame of reference and some guidance to a user in evaluating candidate recovery technology for his particular need.