AssayIndex
Content & mass

Nitrogen determination

Content estimation from total nitrogen, by Kjeldahl or combustion. An orthogonal check on AAA. Confounded by any nitrogen-containing excipient.

Related terms

Amino-acid analysis (AAA)
Acid hydrolysis followed by chromatographic quantification of the liberated residues. The reference method for peptide content where no standard of the intact peptide exists.

Where this term appears

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