Batch paperwork
Testing & Quality
What the numbers on a Certificate of Analysis actually mean — and how to match paperwork to your exact batch.
HPLC purity
Separates the sample and reports what share of the detected signal is the target peptide. It measures purity — not sterility, endotoxins or net peptide content.
Mass spectrometry
Confirms the molecular weight matches the expected compound — an identity check, not a purity score.
Batch / lot number
Ties the paperwork to one production run. A COA is only meaningful when its lot number matches the vial you received.
What a COA doesn't prove
A purity result alone isn't evidence of sterility, safety or suitability for any use. Separate tests are needed for those.
COA lookup library
Our searchable batch-lookup library is being built. We only publish certificates we can tie to a real lot number and product — nothing placeholder. Until it's live, contact us with your order and lot number to request the paperwork for your batch.
COA questions →Products are sold for laboratory research use only. See the research library and learning center.