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I don’t know! With citric acid and it’s predecessors, they only dissolve iron atoms but don’t react with the chromium and nickel alloying elements, which is an

• hammock 5y ago
  I found this passage. Doesn't really explain the process though.. natural oxidation completes in the air 1-2 weeks? >To passivate stainless steel at home without using a nitric acid bath, you need to clean the surface of all dirt, oils and oxides. The best way to do this is to use an oxalic acid based cleanser like those mentioned below, and a non-metallic green scrubby pad. Don't use steel wool, or any metal pad, even stainless steel, because this will actually promote rust. Scour the surface thoroughly and then rinse and dry it with a towel. Leave it alone for a week or two and it will re-passivate itself. You should not have to do this procedure more than once, but it can be repeated as often as necessary. https://spaco.org/Passivate.htm https://spaco.org/Passivate.htm