Try baking soda with white vinegar.
Whink Rust Remover will quickly get rid of rust stains and best of all it requires no scrubbing.
It's a common ion in tap water. It's also what causes what most people call "hard water stains." It's that white chalky stuff that builds up around your sink.
wash it
I need help with cleaning sinks that are porcelain. I have a porcelain kitchen sink that is stained. How can I remove the stains without scratching the porcelain?
Fill something with cold water, a sink would be great. Then soak the stained item in the water for a few hours of overnight if you can. After a while take it out and scrub it with something then wash it.
Those are hard water stains. You need to wipe your sink dry after use, if you have hard water.
Whink Rust Remover will quickly get rid of rust stains and best of all it requires no scrubbing.
It's a common ion in tap water. It's also what causes what most people call "hard water stains." It's that white chalky stuff that builds up around your sink.
White residue on faucets and shower heads most likely are from the hard water mineral deposits that your water contains. Sometimes, the residue is from cleaning products, but most often not. To help reduce white residue and hard water stains, a salt type water softener is recommended.
with Brasso
wash it
There are many ways to clean a laundry sink. One could use baking soda or even leave a denture tablet in the sink overnight with warm water. This should remove the stains in the sink.
I need help with cleaning sinks that are porcelain. I have a porcelain kitchen sink that is stained. How can I remove the stains without scratching the porcelain?
Dunno about Head and Shoulders stains, but I badly blackened my stainless steel sink with a weak solution of hydrochloric acid a while ago. I tried various things, but Brasso did a pretty good job in the end.
Ships can sink anywhere, not just in the Black Sea, for instance if the ship gets a hole that lets water in.
It's pretty hard to avoid.
It is densier than the water but it will sink. :D