Of course rinse the spot with clean water right away and wipe dry.
Grout haze polished marble.
You can start cleaning it right after the grout lines dry.
Most grout haze removers are acidic and will etch the marble dulling the surface and ruining the finish.
If it is actually a cement haze then if you take some diluted vinegar in a out of the way spot and apply it to the haze it should remove it.
While sealing the grout a lot of sealer has marked the tiles.
Nearly all grout haze removal products are made with acids and will etch burn the marble floor tile ruining the polished finish and leaving it dull.
I tested a small area today with a regular cloth and it wasn t going anywhere.
Grout haze removal solutions first if you already have acetone or mineral spririts you can try to remove the haze with these.
Fill a sponge with water wring most of it out and pat the surface of the marble tile over the haze area with the damp.
Low rpm scrub machine 175 350 rpm wet dry vac.
To remove grout haze cement latex modified and epoxy that has dried on polished acid sensitive stone surfaces.
Because it is a polished marble made of calcium carbonate it makes it acid sensitive.
Polished marble is a very hard surface that has to be burnished with diamond encrusted pads to restore the finish so we set about this task using a set of tile doctor burnishing pads.
However you can use the hard water and soap film remover which works very well to remove grout haze and is made for use on marble and all stone.
White nylon scrub pad or aquascrub cotton towels squeegee optional.
Marble etching can occur from acidic and or harsh chemicals.