Again, thanks in advance for any help provided. Responses are always a help. Latest issue, custy has "dark granite", I have not seen it yet. Cleaned kitchen drain with Sulfuric acid, wiped up the mess with a rag and then set rag on granite counter. Says it is eating the granite , whitish. I believe him but is there anything that can be done. Cannot see him until Saturday so was looking for some help. I know hydrofluoric acid will cause problems but then what to do about it. Can it be repaired through face polishing?

thanks

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Sincerely:

Don Semi
Stone Restoration Services - Denver
Dedicated to the Preservation of Fine Surfaces
don@srsdenver.com
303-249-7909