"Copper content" refers to the amount or concentration of copper present in a particular substance or object. It helps determine how much copper is in something compared to other materials or elements. Full definition
These products have the highest copper content of any compression socks on the market. (compressioncarl.com)
The company guarantees that these sleeves have the highest copper content out of any coloured elbow compression sleeves on the market. (compressioncarl.com)
After the discovery they doubled copper content in the feed. (fullhealthsecrets.com)