Lab results library
Every batch. Every result. Public.
This is the page most peptide vendors don’t have. Search the lot number printed on your vial, or browse the full library of third-party Certificates of Analysis — HPLC purity and mass-spec identity for every lot.
Try a live lot:
Every vial prints its lot number on the label. Enter it to read the exact third-party report for your batch — HPLC purity, mass-spec identity, net content, endotoxin.
Certificate library0 published
Reading the report
A COA in four lines
Every certificate covers the same four questions. Here's what each section means.
Identity (ESI-MS)
Confirms the vial contains the named peptide — mass spectrometry reports expected vs. found mass, matching within tolerance.
Purity (RP-HPLC)
Reversed-phase HPLC reports the target as a percentage of chromatographic area against a spec like ≥ 98%, with a clean single peak.
Net peptide content
The fraction of the vial's mass that is peptide — the rest is bound water and counterion. This is what you use for concentration math.
Endotoxin & bioburden
Bacterial endotoxin (LAL) reported in EU/mg against a limit, plus bioburden — no acceptable middle ground.
Want the full walkthrough? How to actually read a Certificate of Analysis →