Marks on dishes or on the inside of porcelain sink are usually due to aluminum pots and utensils. There is no need to to displace the sink or dishes since these marks are not permanent — even though they may not be removed by normal cleaning methods entirely. A light abrasive does not scratch the porcelain area and eradicates mark. Nevertheless, acidic cleansers should be avoided by you. Aluminum marks may be removed by these cleansers however the porcelain is also etched by them and break up its glossy finish.
Rinse dish or the sink with warm tap-water. Wipe it out using cleaning rag or a damp sponge to get rid of any grime build-up.
Sprinkle baking soda on the aluminum marks, covering them entirely. Instead, make use of gel or a gentle scouring powder.
The aluminum marks using a damp sponge. Powder or the nahco3 eliminates the marks without etching the top layer of the porcelain.
Rinse dish or the sink with water that is hot. Wash another time using a mild dish soap along with hot water.
Rinse the sink or dish with water to get rid of the dish soap deposit.