Research notes
The parts nobody
explains.
Practical documentation on reading a certificate, interpreting a purity figure, and handling material once it arrives. No protocols, no dosing, no claims — laboratory practice only.
How to read a certificate of analysis
Most buyers check one number on a COA. There are four that matter, and the relationship between them tells you more than any of them alone.
Read→Purity is not one number
Two vials can both be labelled 99% and contain measurably different amounts of peptide. The label is not lying — it is answering a narrower question than you asked.
Read→Why a warm parcel is usually fine
Lyophilized peptide is considerably more robust than the cold pack in the box suggests. Understanding why tells you which handling steps actually matter.
Read→