01Purity
99% purity, at the minimum
Nothing we list goes below a 99% purity floor; that's the minimum, not the goal. When a batch is tested and the result comes back under 99%, it doesn't go on the site. We'd rather show something as out of stock than list a vial we can't stand behind.
02Testing
Tested for purity and identity
Purity and identity are two different questions, and answering only one isn't enough. HPLC measures how pure the compound is and reports it as a percentage you can read straight off the chromatogram. Mass spectrometry confirms the sample is the molecule it's supposed to be, matched to its exact molecular weight — one analysis tells you how pure it is, the other whether it's the right thing at all. We rely on both, and when a batch is tested, we publish the results in the COA Library so you can read them for yourself.
04Storage & Handling
Lyophilized, refrigerated, kept dry
Peptides break down when they sit in moisture and warmth, so how a vial is handled matters as much as how it's tested. Everything ships lyophilized, meaning freeze-dried to a stable powder, and stays refrigerated in a clean, dry space until the moment it leaves here. Stored sealed and cold that way, a lyophilized peptide holds its integrity for well over a year.