Certificate of Analysis
Proof built in.
Every lot, every time.
We don't grade our own homework. Every ProGrade batch is analyzed by an independent third-party laboratory for identity and purity, then screened for heavy metals and endotoxin. See the standard before you buy, and request the exact document for your lot when needed.
≥99%
Purity release standard
100%
Lots tested
4
Assays / batch
How every batch is tested
Purity — HPLC-UV
High-performance liquid chromatography quantifies peptide purity against a ≥99% release standard.
Identity — LC-MS
Liquid chromatography–mass spectrometry confirms the exact molecular identity and mass of each compound.
Safety — HM + Endotoxin
Heavy-metals (ICP-MS) and bacterial-endotoxin (LAL) screening confirm each batch is clean, not just pure.
What every ProGrade COA shows
Each certificate is tied to a single production lot. The layout below shows the standard fields; batch-specific results are available through the COA library or by request.
Catalog COA library
Search the full catalog and request the batch-specific certificate for any compound. Verification is free — email the lot number on your vial and we return the matching COA.
Showing 23 of 23 catalog items. A batch-specific Certificate of Analysis is issued for every lot; request the exact document for the vial you receive.
The purity guarantee
If any independently conducted HPLC test on a vial you received returns below our stated purity standard, we refund the full order — including shipping — and the cost of the test. The data is the product.
Request a COA