Help18 answersUpdated 2 Nov 2026

Questions

Short answers on ordering, lots, delivery and research use. If yours is not here, the contact form reaches a person.

01

Ordering and payment

Do I need an account to order?

No. Checkout works as a guest with an email address. If you tick "remember my details", your address is saved on your device for next time.

Which payment methods do you take?

[Payment methods to be confirmed]. Express buttons appear at the top of checkout when your device supports them.

Can my institution pay by purchase order?

Yes. Add the PO number and VAT number at checkout and the invoice will carry both. For larger orders, use the bulk quote form on the contact page.

Do you offer multi-buy prices?

Yes. Three or more vials of the same product are 10% off each, and five or more are 15% off. The discount is applied in the basket.

Can I share a basket with a colleague for approval?

Yes. The basket has a "copy basket link" button. The link opens the same items, sizes and quantities on any device.

02

Lots and certificates

What does each certificate show?

Each lot is tested for purity by HPLC and for identity by mass spectrometry. The certificate shows the lot number, the purity as a percentage, the expected and measured mass, the test date and the testing laboratory.

How do I check that my vial is genuine?

Type the lot number from the label into the lot register. If the lot is ours, its certificate opens.

Do all sizes come from the same lot?

Not always. Each size can come from a different lot, so the product page shows the lot and certificate for the size you choose.

What happens when a lot sells out?

The next lot is tested before it goes on sale. Sold-out lots stay in the register so anyone holding an older vial can still check its certificate.

03

Delivery

How much is delivery?

UK delivery is free by Royal Mail Tracked 24. EU delivery is £9.95, free over £150. US and Canada delivery is £12.95, free over £200. See delivery and returns.

When is the dispatch cut-off?

3 pm UK time, Monday to Friday.

What if something arrives damaged?

Send a photo within 14 days and we replace it at no cost.

04

Research use

Who can buy from Peptidarium?

Adults aged 18 or over buying materials for laboratory research. At checkout you confirm that the materials are for research use only.

Do you give dosing or preparation advice?

No. Our library describes what published studies measured. It does not give instructions for use in people or animals, and our team will not advise on it.

Are your products medicines?

No. They are research materials. They are not licensed medicines, are not for human or veterinary use, and are not sold to treat or prevent any condition.

05

The library

Who writes the library entries?

Entries are written from published sources and reviewed by our scientific editor before they go live. See our editorial policy.

Does selling a compound affect what you write about it?

Entries are written to the same standard whether or not we sell the compound, and some entries cover compounds we do not sell at all. Store information sits in a separate, labelled box.

I found an error. How do I report it?

Use the correction form on the contact page. Every accepted correction is logged in the entry's revision history.