Branch copper content per branch dry mass

Formal name:  branch copper content per branch dry mass
Local identifier:  TOP417
Synonym Term:  branch Cu content per dry mass
Related Term:  branch Cu content
Related Term:  branch Cu concentration
Definition:  The ratio of the quantity (SEP:quantity) of copper (CHEBI:copper atom) in the branch (PO:branch) to the corresponding branch (PO:branch) mass (PATO:mass) assessed after drying
Formal Unit:  mass unit / mass unit or amount unit / mass unit

Comment:  The quantity of copper can be expressed either as a mass (with mass unit, e.g. gram) or as an amount (with amount unit, e.g. mol). The term concentration is polysemic and we suggest to not use it in this context.
Reference:  Eric Garnier, Jens Kattge, Stefan Klotz, Ingolf Kühn, Ulrike Stahl