Black spots in porcelain coffee mug
I bought a (fine china) coffee mug a couple of months ago and started using it recently. I saw 3 black spots in the inside of the mug and a lot more speck-like scattered on the outside.Initially, I assumed it to be just dust and tried washing with dishwashing liquid. It still remained and so,I tried my luck by soaking it in baking soda.Rinsed out the baking soda and filled with diluted vinegar. And then I tried scrubbing it with an brush but the spots do not seem to go away. What are these spots?
Best Answer
This is something that can happen during the manufacture of porcelain. It is due to iron particles in the clay used to make the porcelain, they get this look after being fired. It is part of the mug itself and cannot be removed.
Customers don't like isolated black dots on white porcelain, so high end manufacturers only sell items without these dots. But if you bought something in the mid- or low-price range, or B-ware from the high end brands, these specks are common enough.
It is only an optical defect, the mug itself is clean and you don't have to do anything more about it.
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How do you get stains out of ceramic mugs?
Sprinkle a little baking soda onto the bottom of your stained cup or carafe, add just enough water to form a paste, and scrub. The gentle abrasion of the baking soda will get rid of stains in a matter of minutes. Then, simply rinse and wash the way you usually would.Is it safe to drink out of chipped mugs?
Although not proven to be dangerous in finished form, a crack, chip or scratch along the inside or the lip portion of a plastic mug can emit trace amounts of plastic substances, such as bisphenol A, or even flake off fragments into the liquid, making the mug unsafe to use.How do you get rid of black spots on cups?
Scrub with Baking Soda baking soda on the stain and add a little water to make a paste. Scrub the stain with a damp, soft sponge. The gentle, abrasive nature of baking soda helps lift coffee or tea stains from the surface. Once you've finished scrubbing, rinse the mug well to remove any remaining baking soda.Why is there black dots in my cup?
It is due to iron particles in the clay used to make the porcelain, they get this look after being fired. It is part of the mug itself and cannot be removed. Customers don't like isolated black dots on white porcelain, so high end manufacturers only sell items without these dots.How To Remove Coffee Stains From Mug Easy Simple
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