michael94
Member
- Joined
- Oct 11, 2015
- Messages
- 2,419
from 1962 to 1982 American pennies were 95% Copper 5% Zinc brass alloy. You can find pennies from that time quite easily today in circulation. I'm wondering if this could be used as trace metal source for example if soaked in some coffee or something else acidic. Perhaps it would form a complex with the tannins? The ratio would be 19:1 copper to zinc not sure if thats good or not.
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