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Stainless steel blackening relief

We have blackened stainless steel food bowls with bichromate sodium and we need to relieve the blackening from the inner surface with chemical solution.
Would someone know this solution?

AMR MOBARAK
- CAIRO, EGYPT
2006

Hello, Amr. I think that was a very bad idea. I do not think you should sell a bowl for food service that was blackened with sodium dichromate because hexavalent chromate is a carcinogen.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2006

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