AssayIndex
Content & mass

Fill weight

The gross mass of material in a vial as weighed. Not the peptide mass — it includes water, counter-ion and residual solvent.

Related terms

Label claim
The mass of compound stated on the vial. Whether it refers to gross fill or to peptide content is almost never specified.
Recovered mass
Gross fill × target-compound content / 100. The milligrams of named compound actually obtainable from the vial.

Where this term appears

The glossary exists to make record pages readable without a chemistry degree. Every technical term on a report resolves here.