Rust stains on porcelain sinks are triggered by immediate experience of metal, like the metal bottom of shaving cream can, dripping taps, standing water or water that contains a large concentration of iron. When water comes in to contact with bedrock or soil that includes iron and filters throughout the floor, the mineral enters and dissolves the ground water, which can be used as drinking-water. Iron in water oxidizes and reacts with oxygen in the air. The iron is pulled by this chemical response from the water and turns it back back to a good form, which becomes a red- rust stain in your porcelain sink. Furthermore, harmless microorganisms that makes it rust and stain your porcelain sink and consumes iron may be current in the water.
Rub it in a forth and straight back movement within the rust stains on the porcelain sink. As you scrub it the moist pumice will dissolve to to create a paste.
Rub the paste to the areas using the pumice scouring stick till they have been removed. Rinse all the paste from the sink.
Plug the sink and spray it.
Let the vinegar sit to eliminate the rust stains.
Rinse the sink to remove the vinegar out.
Stubborn Rust Stains
Put on rubber gloves. Mix 2 tablespoons borax with 2 cups warm water in a bowl.
Use the borax solution using a clean cloth to the aspects of the sink.
Let the borax solution sit for 1-2 hrs in the sink. Rinse the sink with cool water to eliminate any residue out.