How does copper make adorn article maintain clean a bit simpler: dip in vinegar with cloth dip, add appropriate amount of salt or cuttlefish bone powder wipe, green rust can be removed.
More complicated: we can remove the bronze green by mechanical rubbing. However, it is not only troublesome, but also harmful to the surface of the copper ware.
Here's a good way to get rid of it.
Put 20 ml of concentrated ammonia water into the beaker with a measuring tube, then pour 40 ml of distilled water into the beaker. Stir with a glass rod and mix to form a solution of ammonia water.
The copper water can react with the green to form a soluble blue copper ammonia complex to remove the green.
In order to enhance the effect of brass water except the patina, brass water can also be mixed with chalk powder or talcum powder, this can increase the mechanical friction effect, make the deep oxidation of fully exposed, guarantee the patina and ammonia reaction completely, make bronze surface smooth and bright.
Dip the cotton in and wipe the copper with water, and scrub repeatedly on the copper products with copper rust.
Before long, the rust had disappeared from the surface of the copper, and the copper had a bright metallic sheen, while the cotton was blue.
Some copper products on the bronze green is not easy to get rid of, but can be soaked in the copper wipe water for a while, and then dip in the cotton with the copper wipe water to scrub.