Same-day dispatch on orders placed before 2pm · Tracked UK delivery
Diluent UK Research Peptides
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How to Order and Pay

How to order, from basket to front door: the steps, the delivery cost, dispatch timings and what the parcel contains.

What are the steps to place an order?

  1. Choose your strength. Every compound page lists each strength and format alongside its price and per-milligram rate, which leaves no sum for you to work out.
  2. Put it in the basket. You can do this straight from a listing, without ever needing to open the product page.
  3. Go to checkout. Enter a name, address and email; no registration and no password are needed.
  4. Pay. Payment details are emailed once the order is placed, and nothing is charged on the site.
  5. Follow the parcel. Once the courier has collected it, its tracking number is sent to you by email.

How fast is dispatch?

Dispatch times
Order placedDispatched
Monday to Friday, before 2pmSame day
Weekday, after 2pmNext working day
Saturday, Sunday or bank holidayNext working day

Everything is held in the United Kingdom and sent by tracked Royal Mail. With no border to cross, there is no clearance step, import charge or handling fee, and no parcel left in a depot waiting to be released.

How much is delivery?

Tracked delivery to any UK address is £4.95, and free on orders above £75. Freight-forwarding addresses are refused, and nothing is posted beyond the United Kingdom.

What is in the parcel?

Your itemSealed, and labelled with the compound, strength, format and purity
Purity≥99% by HPLC analysis
Certificate of analysisAvailable on request for the material you received
Outer boxUnmarked, giving no hint of the contents
VialsContain freeze-dried powder, which travels well by post
Sprays and pensArrive already in solution

How does payment work?

Payment details are emailed after the order is placed. No card number is ever entered on this site, and we store none. Dispatch follows as soon as the payment arrives.

What happens if there is a problem?

Contact us before anything else. A cracked vial, a stopper that has lost its seal, or a cake that appears melted, discoloured or collapsed to one side are all reasons to stop at that point and go no further. If the item is wrong or was damaged in transit, you receive a replacement or a refund, and we pay the return postage.

Sealed items can be returned within 14 days if you change your mind. Once a vial is opened, the hygiene exemption applies, as the returns page explains.

Do you give dosage advice?

No, and the answer is the same by email. Every product on this site is an unlicensed research compound, intended for laboratory research. Each product page instead gives the reconstitution arithmetic, showing the concentration produced by each volume of bacteriostatic water, plus the storage conditions. Both are descriptions of a material, and neither instructs anyone on its use.

Research use only. Diluent is not a pharmacy, and none of its compounds is a licensed medicine: everything is sold for laboratory research, with no dosage, protocol or administration guidance given. Not intended for human or veterinary use, or for use in food.

How to Order and Pay questions

How soon will my order arrive?

An order placed before 2pm on a working day is dispatched that day by tracked Royal Mail. Because dispatch begins inside the UK, no customs step applies and no time is lost to import checks.

Is an account required?

No. All checkout asks for is a name, an address and an email.

How is payment made?

Payment details are sent by email as soon as the order is placed. Nothing is charged through the website, and no card details are held.

Is the parcel discreet?

Yes. It travels in an unmarked outer box that gives nothing away, with tracking throughout.

Are there customs or import charges?

No. Every order ships from stock already held in the United Kingdom, so it never crosses a border.

What does delivery cost?

Tracked delivery is £4.95, and orders above £75 ship free. UK addresses only.