Even having something light to eat with it doesn‘t help much; only a full meal will prevent it.But why does iron irritate the stomach?
Nothing to worry about. Copper gets like that from any exposure to the elements. As long as no water is leaking, I wouldn't worry about it. LOL Just look at the Statue of Liberty!!! I can't even imagine that she was once copper-colored.
Oxidation on the surface when it was heated to solder it.
Fe+2 fluctuates proteins in our food
