A Certificate of Analysis (COA) is an independent laboratory report on a specific production batch. It verifies what the material is (identity), how pure it is (purity), and how much is in the vial (quantity). This page is the home of our COA library: each product below holds the certificate slot for its current batch, so you can check the documentation for the exact batch you receive.
Why we publish everything
In a market where certificates are hidden, redacted, or self-issued, we do the opposite. This is the whole brand, not a badge.
An independent lab, namedEvery certificate is issued by Janoshik Analytical, not by us. We are the laboratory's customer, nothing more.
Verifiable at sourceEach result carries a task number you can enter in the lab's public database. Check it yourself; don't take our word for it.
We publish the failures tooIf a batch misses target it appears here marked FAILED and is not sold. Publishing a failure costs us one batch, and is the strongest signal we can give.
Batch-matched to your vialEvery certificate's batch number matches the lot printed on the vial you receive. No lot, no report, no listing.
Independent testing is not yet published. Every batch we stock is sent to the laboratory for independent analysis before it goes on sale; each certificate, with its SHA-256 checksum, publishes on this page as results return, product by product. Every published certificate will link to the laboratory's public verification database, so each result can be checked at source. Not sure what a certificate should contain, or how to check one? See how to verify a peptide supplier — the checklist we publish for buyers, including for use on us.
Who does the testing
Testing is performed by Janoshik Analytical, an independent third-party laboratory specialising in peptide analysis (HPLC and mass-spectrometry methods). We are a customer of the laboratory and nothing more — results are published as issued. Every Janoshik certificate carries a task number that can be verified directly in their public results database, so a COA shown here can be independently confirmed rather than taken on trust.
Certificates by product
Lab supplies (such as bacteriostatic water and consumables) are sourced as manufactured, certified products and are not individually batch-tested by us.
How to read and verify a COA
Batch number — match it to the batch printed on your vial's label.
Identity — confirms the material is the named compound.
Purity — the chromatographic purity measured for the batch.
Quantity — the measured content per vial.
Verification — enter the certificate's task number in the laboratory's public database to confirm the result is genuine.
SHA-256 checksum — a fingerprint of the certificate PDF itself. Hash the file you downloaded and compare it to the checksum shown next to the certificate; if they match, character for character, the document has not been altered.
Verifying the SHA-256 checksum
A SHA-256 checksum is a 64-character fingerprint calculated from the exact bytes of a file. Change a single character in the PDF and the checksum changes completely, so it lets you prove the certificate you hold is byte-for-byte the one we published, with no trust required. When a certificate is published above, its checksum is shown beside it. Download the PDF, compute the hash on your own machine, and confirm the two strings match.
Windows (PowerShell):
Get-FileHash .\certificate.pdf -Algorithm SHA256
macOS / Linux (Terminal):
shasum -a 256 certificate.pdf
Compare the value it prints with the SHA-256 shown next to the certificate. A match means the file is authentic and untampered; a mismatch means the file you have is not the one we published — in that case, email us and do not rely on it.
Got a vial in hand? Read the lot number printed on your label, type it into the batch search above, and open the laboratory's verification for that exact batch. The number on your vial and the number on the certificate are the same, or we don't list it.
Batch-specific requests
Need the certificate for the specific batch in your order, or for an earlier batch? Email research@powerfullypeptides.com with your order number and we will send it.
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