COA Explained
What a Certificate of Analysis is — and how to check ours.
A Certificate of Analysis (COA) is the lab's report on a specific batch. It's the single most useful document in this category, and it's worth knowing how to read one.
What a COA tells you
- Identity — confirmation the material is what the label says.
- Purity — the measured result, typically by HPLC, as a percentage.
- Batch — the code that ties the certificate to the exact lot you receive.
- Date — when the batch was tested.
How to read ours
On every product page, the Current COA panel shows the certificate's batch, issue date, and validity, with a button to open the full PDF. Alongside it you'll see a document integrity hash — a fingerprint of that exact file.
How to verify it yourself
- 1Match the batch — the batch code on the certificate should match the product's batch code.
- 2Open the PDF and read the lab's result directly, not our summary of it.
- 3Where the lab offers it, use the "Verify this batch independently" link to confirm at the source.
- 4Check the archive — previous batches stay in the historical COA archive.
Why we keep both current and historical
A batch sells through and is replaced. Keeping the archive means the documentation trail stays intact — you can see not just this batch, but how we've documented every one before it.
Certificates document research-grade material supplied for research use only. They are not a statement of safety or suitability for human use.