2 mix 1 2 cup of ammonia with 1 gallon of warm water in a bucket.
Cleaning marble with amonia and peroxide.
Such biological stains as algae can be cleaned with cup ammonia in 1 gal.
For most organic food stains the marble institute recommends cleaning with a solution of 12 hydrogen peroxide and a few drops of ammonia.
Wipe the stains with this solution and leave on for 10 minutes.
Then wash off with cold water.
For removing stubborn stains from cultured marble you may require a harsher cleaner.
Follow the above directions for removing rust stains from marble to effectively remove organic stains.
Add more peroxide if needed for stain removal.
Spread the solution over the surface with a soft cloth.
If you are cleaning marble floors then try using a duster or broom for this.
Use the cloth to rub the mixture into the marble.
You can create a marble poultice using 6 hydrogen peroxide and a few drops of ammonia.
Mix 1 4 cup each of baking soda vinegar and ammonia and dilute it in eight cups of water.
Or try bleach or hydrogen peroxide.
Materials that can be removed with peroxide include some inks from markers.
Use a clean rag or microfiber towel and wipe down the surface and ensure that all lose dirt and grit is gone from the surface.
For ink on light marble use bleach or hydrogen peroxide.
On dark marble use lacquer thinner or acetone.
If you spilled anything oil based like a vinaigrette.
Sweep or vacuum your marble floors on a hard floor setting to remove any dirt or debris that can scratch the floor.