SEC and DLS in Peptide Aggregation Testing: What Researchers Should Know
Peptide aggregation can affect purity, recovery, appearance, and reproducibility. SEC and DLS answer different quality questions, which is why aggregation testing works best as a method stack instead of a single pass/fail number.
Aggregation Testing Literacy
SEC and DLS in Peptide Aggregation Testing: What Researchers Should Know
Peptide aggregation can affect purity, recovery, appearance, and reproducibility. SEC and DLS answer different quality questions, which is why aggregation testing works best as a method stack instead of a single pass/fail number.
BetterBio Synthesis materials are sold for laboratory research use only. This article is educational content for researchers reviewing peptide aggregation testing, size-exclusion chromatography, dynamic light scattering, stability, and COA interpretation. It is not medical advice, does not recommend human or veterinary use, and does not provide dosing, administration, treatment, cure, or efficacy guidance. All compounds discussed must be handled only by qualified professionals in appropriate research settings.
Quick Read: What SEC shows
Size-exclusion chromatography gives a separation-based view of monomer-like material, earlier-eluting higher-molecular-weight species, later-eluting fragments, and profile changes under defined method conditions.
Quick Read: What DLS shows
Dynamic light scattering estimates solution-state particle-size behavior. It can flag larger species, but it does not identify particle composition by itself.