Jewelers use Simplicity Gold Refining System. Refine your own material and get back all the lost gold from your filings, polishing scraps, bench sweeps, and scrap gold. The convenient clean sweep powder will make quick work of your polishing sweeps to prepare them for refining. Process one ounce per hour. Using a rectifier (REQUIRED), the *Simplicity gold refining system and special salts you will get 99.95% pure gold from your scrap gold and sweeps. Cost of gold recovery averages only $3.00 per ounce of fine gold recovered.