How Our Batches Are Tested: Reading and Verifying a COA
Where Peptide Stock's lot-specific test reports come from, how to match your vial to its report, and how to read HPLC purity and…
Peptide Stock supplies analytical-grade peptides and laboratory consumables to vetted research organisations, by account only. We do not sell to the public, and nothing we supply is for human or veterinary use.
Tell us about your organisation, your research area and what you need, using the contact form.
We check the organisation, the intended laboratory use and that appropriate facilities and trained staff are in place.
Approved organisations receive an account and written quotations. We may decline any request without giving a reason.
Every lot we supply is traceable, with independent analytical reports where the batch has been tested.
Look up a lot number to see the independent laboratory results for that batch: identity, purity and content, with the testing laboratory named.
For help with a past order, use the contact form and include your order reference (for example PS-11234), so we can find it quickly.

Where Peptide Stock's lot-specific test reports come from, how to match your vial to its report, and how to read HPLC purity and…

What "Research Use Only" means for the peptides we supply, why it matters under UK regulation, and how we apply it to orders and…

A practical guide to reading peptide COAs: what HPLC purity and mass spectrometry actually measure, what they leave out, and the…