How to choose a wholesale peptide supplier
Most of what separates a wholesale peptide supplier from a risk is visible before you place an order. Here is the checklist, and where to find each item on this site.
The checklist
- A certificate of analysis per batch, with RP-HPLC purity and mass-spec identity, checkable by batch number. Not one certificate reused across lots. How to verify it.
- Transparent pricing. Per box, per vial and per mg, published, not quoted by email or hidden behind a form. Here it is on the price list.
- A stated minimum order, so you know the terms before you ask. Here it is £300.00 (£100.00 first) (detail).
- Clear freight terms. Included above a stated floor, a flat fee below, no surprise charge at the end. How freight works here.
- Stock you can see. What is on the shelf and what is made to order, per line, not a blanket in-stock claim. See the price list.
- A business you can identify. An address, a phone and a way to reach a desk, not just a form.
- Research-use framing, kept consistently: research chemicals for laboratory use, not human or animal consumption.
Why it matters
A supplier that publishes its prices, states its minimum, tests every batch and can be identified has nothing to hide and nothing to renegotiate mid-order. One that gates all of that behind a quote is asking you to trust what you cannot check.
Ready to open an account? Who qualifies and what is asked.