How do I clean stains in ceramic kitchen sink
Hello. I find Bar keepers friend very effective.
I'm impressed by all the cleaning problems it solves, it may resolve your cleaning issues.
”Trusted by homeowners, hobbyists, musicians, and professional cleaners worldwide, Bar Keepers Friend superior hard surface cleansers tackle rust, mineral deposits, baked-on food, and other tough stains with gentle, bleach-free formulations. Available wherever household cleaning products are sold, Bar Keepers Friend makes industrial-strength cleaning safe, quick, and easy.”
Give Barkeepers friend a go using a spot of water and a sponge or cloth. It should be successful if the underlying surface has not been crazed. You could also give bleach a try........Best wishes
Barkeepers friend comes in liquid and powder, either should work for you.
I agree, Bar Keeper’s Friend is excellent stuff. Otherwise I’d contact the sink’s manufacturer and ask.