Pure copper stops the rot

SCIENTISTS AT Nippon Mining and Metals have refined copper (Cu) to 99.9999999% purity, according to Nikkei.net.

The boffins used electrolysis to get the high purity. Copper wire has a purity of 99.99% while purer copper than this is used in high end audio devices.

The scientists reckon that copper to the purity they've reached won't suffer from verdigris. µ

L'INQ
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