Tech and Don, I called a couple of plating shops today.one refered me to the other,I ask about the Hydrogen enbriddlement.The man said that does not apply to dressup or pretty type plating ,but it would apply to industrial or machinery type stuff. Whats the difference ? Is this true?He told me it might be a month or more before I would get my parts back. he did tell me that he cleaned the parts in 55 gal. drums with a mixture of sulfuric acid ,soda ash and water. he did not tell me in what proportions. Is this safe? what do you guys think? This is open to anyone who may have some ideas. Thanks!