A Certificate of Analysis is the document that turns a purity claim into something you can check. Every batch we release is tested against an ISO/IEC 17025 accredited standard and ships with its own certificate.

• 99%+Minimum purity standard
• 100%Of batches tested
• ISO 17025Accredited testing labs

What gets tested

• HPLC Purity Analysis

  A quantified purity figure measured by reverse-phase high-performance liquid chromatography.

• Mass Spectrometry

  Measured molecular weight compared to the expected value to confirm the correct sequence and structure.

• Identity Confirmation

  Verification that the tested material is the peptide it claims to be, matched against its reference profile.

• Batch Documentation

  Every released lot carries its own certificate, tied to the batch number printed on the vial.

Certificates for your order

The certificate for the lot in your order is linked from that product page — open a product and choose View Certificate of Analysis. If you have already received an order and need the certificate for that specific lot, contact us with the batch number printed on the vial and we will send it through.

Browse the catalogue Request a certificate

Common questions

What is a Certificate of Analysis?

A COA is a document, produced by an analytical laboratory, that records the results of the tests run on a specific batch of material. Rather than asking you to trust a number on a label, it shows the underlying evidence: what was tested, which methods were used, and what the instruments measured.

Where do I find the COA for my order?

The certificate for your batch is available from the product page, printed inside every shipment, and on request from our support team — the paperwork always matches the vial in your hand rather than a generic sample.

How do I read the results?

Start with the identity confirmation, then the purity percentage from reverse-phase HPLC, and finally the measured molecular weight from mass spectrometry compared against the value expected for the correct sequence.

Who performs the testing?

Analysis is performed by an independent, ISO/IEC 17025-accredited laboratory rather than in-house, so results are verified separately from the facility that made the batch.

Is every batch tested?

Yes — every batch we release is tested and ships with its own COA. Purity is measured per batch, and the result for the exact lot you receive is recorded on its certificate.