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Can you remove this stain? Or give advice?

Jeff Jacobs

Contributing Member
I'm at a loss. I've tried OX, muradic acid and a good concrete cleaner with hydrochloric acid; no luck. I 'm not sure what caused the stain but think it may have been sulfuric acid that was spilled. (no one admits it)IMAG0024.jpg
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New member
Maybe Xylene and Acetone...I knew of a stain similar to this one a few years ago, that was impossible to remove.