But a lot of it is stained and dull — even ... If left too long on stainless steel with low corrosion resistance, the oxalic acid can make the metal dull and gray. “It usually takes longer ...
The secret is oxalic acid. Found naturally in rhubarb and ... Back to our collective problem with rust spots and stains on stainless steel. I’ve been using Bar Keepers Friend Soft Cleanser ...
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