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How do I get White Lemon Juice Stains out of a Marble Countertop?
QUESTION
We have a marble countertop that has white stains from lemon juice. How can we remove the powdery white stains and restore the marble?ANSWER
ANSWER - Marble is made up mostly of calcium carbonate, which is a material that is sensitive to acid. Lemon juice is acidic with a pH around 2; neutral is a pH of 7. So it is very acidic. The acidic lemon juice bleaches the marble leaving white spots, and it also etches the marble leaving a textured finish. The etching chemically alters the finish of the marble.It is possible to repair the marble by re-grinding the marble to remove the bleached area and re-polishing the marble to its original finish.
Best bet is to hire a professional stone restoration company who has a lot of experience to help determine how to repair the marble countertop. Otherwise you could go online and look for marble refinishing kits that are sold by companies who make cleaners for stone. I don't know how effective the kits are, but it might be worth a try. Go to the CTaSC website to the Cleaners and Sealers Resource section to see a list of companies who provide cleaners: Cleaners and Sealers.
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I came across this after I foolishly took the advice of another website that told me to leave lemon juice sit on my marble for 5 minutes to remove a rust stain. It wasn’t even 5 minutes and it etched the marble. Oh well! I will teach me to research a little bit more before I take advice.