Quality Control• Intermediate
How Do You Read a Certificate of Analysis?
How do you read a Certificate of Analysis for a research peptide?
A Certificate of Analysis (CoA) documents the analytical testing results for a specific batch of a research compound. Key sections include the label claim, purity by HPLC, peptide content, mass spectral identification, residual solvents, and endotoxin levels.
Quality Control• Intermediate
What Does Peptide Purity Mean?
What does peptide purity mean and how is it different from peptide content?
Peptide purity refers to the percentage of the target peptide relative to total detectable compounds in a sample, typically measured by reverse-phase HPLC. It is distinct from peptide content, which measures the actual mass of peptide in the total powder.