Certificates of analysis

Every batch is tested at an independent laboratory, and every certificate is published here. We do not hold certificates pending request — if a supplier will not show you a COA before you buy, that itself is information.

162 certificates published across 37 product lines. Each is issued by Janoshik Analytical and carries a secret key you can verify independently at janoshik.com/verification — you do not have to take our word for any of it.

Certificates are issued by Janoshik Analytical against the batch code printed on each vial. Check the code on your vial matches the batch listed here, then verify the certificate’s secret key directly with the laboratory — a certificate that does not match the batch you received is worth nothing, and we would rather you check than trust us.