The electrolytic cell of the preferred embodiment includes an electrode pair and a cavitating jet. The projection system is separated into two separate physical parts. The relatively wide field of view generally enables for the scanning of test patterns to be performed with a relatively fewer number of scanning passes, thus reducing the time required to perform the scanning operations as well as the calibration operations. Either the carboxylic acid or the non-hydrolyzed ester functional group is converted to an amine or a derivative thereof to produce a hydroxy-amino acid or derivative thereof. The ground return circuit creates a path from the brush through the relay to an electrical ground.