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For laboratory research use only. Not for human or veterinary use. Official store — we sell through this site only. Every batch sent for independent HPLC testing. Certificates published against the lot number as results return. Tracked dispatch · discreet packaging. Guest checkout available.
HPL Peptides
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Reference material.

Written for researchers evaluating material and paperwork. Nothing here describes an effect, a protocol or a use in any organism — these are notes on compounds as substances and on the documents that accompany them.

START HERE · 7 MIN

How to read a certificate of analysis

What the HPLC trace measures, what mass spectrometry adds, why the lot number is the only part that ties the document to the vial in your hand — and the three ways a certificate can be technically genuine and still tell you nothing.

Read the guide
PLACEHOLDER — HPLC TRACE
All Documents 1 guide
COMMON QUESTIONS

Questions we get asked.

Every product on this site is supplied as a laboratory material for in-vitro study. It is not a medicine, not a dietary supplement, and is not for human or veterinary use, ingestion or administration of any kind. We describe what a compound is — sequence, class, presentation, purity, lot — and never what it does in any organism. If you are looking for guidance on use, we cannot help you and neither can any legitimate supplier.

By the lot number. It is printed on the vial label and appears on the certificate; if the two do not match, the certificate describes different material. Enter the number in the COA library and the certificate for that exact batch is returned. Capitals, spacing and punctuation do not matter.

Tracked dispatch from Bulgaria, in discreet outer packaging with no product markings, within one working day of payment clearing. Delivery costs and estimated dates are shown in full before you pay — never added at the final step.

Yes. Under Irish and EU distance-selling law you have 14 days from the day you receive the goods to cancel, without giving a reason, and you must tell us in writing within that period. We refund within 14 days of being told, by the method you paid with. Vials that have been unsealed cannot be accepted back on hygiene grounds — that exception is set out in full in the Terms of Sale.

No. Guest checkout is available and always will be. An account is useful if you want order history or saved addresses, but nothing requires one.

Send us a photograph of the label. If the lot number is not one of ours we will tell you so plainly. We publish certificates whether or not you have ordered, precisely so that the number can be checked before money changes hands.

Because the independent result has not come back yet. Those lines are marked AWAITING LAB and are listed in the COA library as pending rather than left out. Where a supplier has given us a figure we have not confirmed ourselves, we show it as unverified and make no purity claim for that compound until the laboratory returns.

Every claim on this site has a document behind it.

Look up any lot number and read the certificate for that exact batch — including lots still awaiting results, which are published as pending rather than left out.

Open the COA library