put together the new Colloidal Silver , gold, copper coin cleaner circuit: (generator) works beautiful took 15 minutes to put together and start up. this made some of the finest silver solution ive seen. tydall effect hardly there. I made 5PPM in 1 hr. with the best AC high voltage, which makes true Colloidal Silver . next Iam purchasing gold coins from canada. and do Colloidal Gold . this machine does nano size particles. extreamly effective. glad I check ebay once in awhile.