Free UK delivery Royal Mail Tracked 48hr Batch COA records Research use only
Contained research formats

Pens & refill cartridges

Browse reusable pen kits and compatible 3ml refill cartridges in one dedicated catalogue. Prepared products are made to order from current batch-tracked components to minimise time in the prepared state before dispatch.

Made-to-order pen kits and 3ml refills with clear strength, price and COA status.

All listings Powder vials Multipacks & cases Research consumables
Core Peptides DSIP 10mg 3ml cartridge refill cartridge

DSIP Refill Cartridge

10mg 3ml cartridge refill cartridge
Made to order
COA available Free UK delivery

A prepared 3ml refill-cartridge presentation for the same documented research context as the dsip powder vial.

COA available Pens & refills Free UK delivery Royal Mail Tracked 48hr Research use only

Made to order from batch-tracked components. Prepared presentations are not held pre-filled: preparation takes place after ordering to minimise time in the prepared state before dispatch. Refrigerate at 2-8 C and protect from light on receipt. Stability depends on the compound, preparation and storage conditions; retain the supplied batch documentation.

Made after ordering. Prepared from current batch-tracked components to minimise time held pre-filled.
Price
£53.00
Per cartridge
Research use only
View product
Core Peptides Epithalon 10mg 3ml cartridge refill cartridge

Epithalon Refill Cartridge

10mg 3ml cartridge refill cartridge
Made to order
COA available Free UK delivery

A prepared 3ml refill-cartridge presentation for the same documented research context as the epithalon powder vial.

COA available Pens & refills Free UK delivery Royal Mail Tracked 48hr Research use only

Made to order from batch-tracked components. Prepared presentations are not held pre-filled: preparation takes place after ordering to minimise time in the prepared state before dispatch. Refrigerate at 2-8 C and protect from light on receipt. Stability depends on the compound, preparation and storage conditions; retain the supplied batch documentation.

Made after ordering. Prepared from current batch-tracked components to minimise time held pre-filled.
Price
£43.00
Per cartridge
Research use only
View product
Core Peptides GHK-Cu 100mg 3ml cartridge refill cartridge

GHK-Cu Refill Cartridge

100mg 3ml cartridge refill cartridge
Made to order
COA available Free UK delivery

A prepared 3ml refill-cartridge presentation for the same documented research context as the ghk-cu powder vial.

COA available Pens & refills Free UK delivery Royal Mail Tracked 48hr Research use only

Made to order from batch-tracked components. Prepared presentations are not held pre-filled: preparation takes place after ordering to minimise time in the prepared state before dispatch. Refrigerate at 2-8 C and protect from light on receipt. Stability depends on the compound, preparation and storage conditions; retain the supplied batch documentation.

Made after ordering. Prepared from current batch-tracked components to minimise time held pre-filled.
Price
£39.00
Per cartridge
Research use only
View product
Core Peptides KLOW 80mg 3ml cartridge refill cartridge

KLOW Refill Cartridge

80mg 3ml cartridge refill cartridge
Made to order
COA available Free UK delivery

A prepared 3ml refill-cartridge presentation for the same documented research context as the klow powder vial.

COA available Pens & refills Free UK delivery Royal Mail Tracked 48hr Research use only

Made to order from batch-tracked components. Prepared presentations are not held pre-filled: preparation takes place after ordering to minimise time in the prepared state before dispatch. Refrigerate at 2-8 C and protect from light on receipt. Stability depends on the compound, preparation and storage conditions; retain the supplied batch documentation.

Made after ordering. Prepared from current batch-tracked components to minimise time held pre-filled.
Price
£70.00
Per cartridge
Research use only
View product
Core Peptides MOTS-c 10mg 3ml cartridge refill cartridge

MOTS-c Refill Cartridge

10mg 3ml cartridge refill cartridge
Made to order
COA available Free UK delivery

A prepared 3ml refill-cartridge presentation for the same documented research context as the mots-c powder vial.

COA available Pens & refills Free UK delivery Royal Mail Tracked 48hr Research use only

Made to order from batch-tracked components. Prepared presentations are not held pre-filled: preparation takes place after ordering to minimise time in the prepared state before dispatch. Refrigerate at 2-8 C and protect from light on receipt. Stability depends on the compound, preparation and storage conditions; retain the supplied batch documentation.

Made after ordering. Prepared from current batch-tracked components to minimise time held pre-filled.
Price
£38.00
Per cartridge
Research use only
View product
Core Peptides PT-141 10mg 3ml cartridge refill cartridge

PT-141 Refill Cartridge

10mg 3ml cartridge refill cartridge
Made to order
COA available Free UK delivery

A prepared 3ml refill-cartridge presentation for the same documented research context as the pt-141 powder vial.

COA available Pens & refills Free UK delivery Royal Mail Tracked 48hr Research use only

Made to order from batch-tracked components. Prepared presentations are not held pre-filled: preparation takes place after ordering to minimise time in the prepared state before dispatch. Refrigerate at 2-8 C and protect from light on receipt. Stability depends on the compound, preparation and storage conditions; retain the supplied batch documentation.

Made after ordering. Prepared from current batch-tracked components to minimise time held pre-filled.
Price
£33.00
Per cartridge
Research use only
View product
Core Peptides Semax 10mg 3ml cartridge refill cartridge

Semax Refill Cartridge

10mg 3ml cartridge refill cartridge
Made to order
COA available Free UK delivery

A prepared 3ml refill-cartridge presentation for the same documented research context as the semax powder vial.

COA available Pens & refills Free UK delivery Royal Mail Tracked 48hr Research use only

Made to order from batch-tracked components. Prepared presentations are not held pre-filled: preparation takes place after ordering to minimise time in the prepared state before dispatch. Refrigerate at 2-8 C and protect from light on receipt. Stability depends on the compound, preparation and storage conditions; retain the supplied batch documentation.

Made after ordering. Prepared from current batch-tracked components to minimise time held pre-filled.
Price
£44.00
Per cartridge
Research use only
View product
Core Peptides Wolverine 10mg 3ml cartridge refill cartridge

Wolverine Refill Cartridge

10mg 3ml cartridge refill cartridge
Made to order
COA available Free UK delivery

A prepared 3ml refill-cartridge presentation for the same documented research context as the wolverine powder vial.

COA available Pens & refills Free UK delivery Royal Mail Tracked 48hr Research use only

Made to order from batch-tracked components. Prepared presentations are not held pre-filled: preparation takes place after ordering to minimise time in the prepared state before dispatch. Refrigerate at 2-8 C and protect from light on receipt. Stability depends on the compound, preparation and storage conditions; retain the supplied batch documentation.

Made after ordering. Prepared from current batch-tracked components to minimise time held pre-filled.
Price
£30.00
Per cartridge
Research use only
View product

KLOW Pre-Filled Pen

80mg pre-filled pen
Made to order
COA available Free UK delivery

A KLOW research-use pen presentation containing the 80mg blend format for laboratory research handling.

COA available Pens & refills Free UK delivery Royal Mail Tracked 48hr Research use only

Made to order from batch-tracked components. Prepared presentations are not held pre-filled: preparation takes place after ordering to minimise time in the prepared state before dispatch. Refrigerate at 2-8 C and protect from light on receipt. Stability depends on the compound, preparation and storage conditions; retain the supplied batch documentation.

Made after ordering. Prepared from current batch-tracked components to minimise time held pre-filled.
Price
£110.00
Per pen
Research use only
View product
Core Peptides empty reusable peptide pen and case

Reusable Peptide Pen and Case

Empty reusable pen and case
In stock
COA available Free UK delivery

An empty reusable pen and carry case for compatible research-use cartridge handling and storage organisation.

COA available Made to order Pens & refills Free UK delivery Royal Mail Tracked 48hr Research use only

Assembled to order from current components and supplied with the reusable black pen and case shown.

Assembled to order. Supplied with the reusable black pen and case shown.
Price
£40.00
Per pen
Research use only
View product

Wolverine Pre-Filled Pen

10mg pre-filled pen
Made to order
COA available Free UK delivery

A Wolverine research-use pen presentation containing the 10mg blend format for laboratory research handling.

COA available Pens & refills Free UK delivery Royal Mail Tracked 48hr Research use only

Made to order from batch-tracked components. Prepared presentations are not held pre-filled: preparation takes place after ordering to minimise time in the prepared state before dispatch. Refrigerate at 2-8 C and protect from light on receipt. Stability depends on the compound, preparation and storage conditions; retain the supplied batch documentation.

Made after ordering. Prepared from current batch-tracked components to minimise time held pre-filled.
Price
£70.00
Per pen
Research use only
View product
Core Peptides Retatrutide 30mg 3ml cartridge refill cartridge

Retatrutide Refill Cartridge

30mg 3ml cartridge refill cartridge
Made to order
COA available Free UK delivery

A prepared 3ml refill-cartridge presentation for the same documented research context as the retatrutide powder vial.

COA available Pens & refills Awaiting component restock Free UK delivery Research use only

Made to order from batch-tracked components. Prepared presentations are not held pre-filled: preparation takes place after ordering to minimise time in the prepared state before dispatch. Refrigerate at 2-8 C and protect from light on receipt. Stability depends on the compound, preparation and storage conditions; retain the supplied batch documentation.

Made after ordering. Prepared from current batch-tracked components to minimise time held pre-filled.
Price
£80.00
Per cartridge
Research use only
View product
Core Peptides Tirzepatide 120mg 3ml cartridge refill cartridge

Tirzepatide Refill Cartridge

120mg 3ml cartridge refill cartridge
Made to order
COA available Free UK delivery

A prepared 3ml refill-cartridge presentation for the same documented research context as the tirzepatide powder vial.

COA available Pens & refills Awaiting component restock Free UK delivery Research use only

Made to order from batch-tracked components. Prepared presentations are not held pre-filled: preparation takes place after ordering to minimise time in the prepared state before dispatch. Refrigerate at 2-8 C and protect from light on receipt. Stability depends on the compound, preparation and storage conditions; retain the supplied batch documentation.

Made after ordering. Prepared from current batch-tracked components to minimise time held pre-filled.
Price
£132.00
Per cartridge
Research use only
View product

Retatrutide Pre-Filled Pen

30mg pre-filled pen
Made to order
COA available Free UK delivery

A Retatrutide research-use pen presentation containing the 30mg format for laboratory research handling.

COA available Pens & refills Awaiting component restock Free UK delivery Research use only

Made to order from batch-tracked components. Prepared presentations are not held pre-filled: preparation takes place after ordering to minimise time in the prepared state before dispatch. Refrigerate at 2-8 C and protect from light on receipt. Stability depends on the compound, preparation and storage conditions; retain the supplied batch documentation.

Made after ordering. Prepared from current batch-tracked components to minimise time held pre-filled.
Price
£120.00
Per pen
Research use only
View product

Tirzepatide Pre-Filled Pen

120mg 3ML cartridge with reusable pen and case
Made to order
COA available Free UK delivery

Listed for laboratory research use only, with product handling, batch, and COA details kept together for traceability.

COA available Pens & refills Awaiting component restock Free UK delivery Research use only

Made to order from batch-tracked components. Prepared presentations are not held pre-filled: preparation takes place after ordering to minimise time in the prepared state before dispatch. Refrigerate at 2-8 C and protect from light on receipt. Stability depends on the compound, preparation and storage conditions; retain the supplied batch documentation.

Made after ordering. Prepared from current batch-tracked components to minimise time held pre-filled.
Price
£220.00
Per pen
Research use only
View product

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Pens & refill cartridges

Why research organisations choose contained formats.

Pen kits and refill cartridges give laboratories and procurement teams a clearly identified, contained presentation that is easy to distinguish from powder-vial stock and straightforward to record within repeat research workflows.

Clear product identification

Each prepared cartridge is labelled by compound, stated strength and part number, helping teams keep the selected format aligned with the relevant batch and order record.

Consistent presentation

A defined 3ml cartridge format makes it easier to compare prepared presentations across documented laboratory workflows without confusing them with powder-vial inventory.

Reusable hardware

Once compatible reusable pen hardware is held by the organisation, refill cartridges provide a separate repeat-procurement format without purchasing another case and pen for every order.

Prepared only after ordering

Prepared pens and refill cartridges are made to order rather than held pre-filled. This minimises elapsed time in the prepared state before dispatch. Refrigerate at 2-8 C and protect from light on receipt; stability varies by compound, preparation and storage.

All pen and cartridge presentations are supplied strictly for lawful laboratory research. They are not intended for human or veterinary use, and no usage or medical guidance is provided.

Quality & research use

Batch-focused research supply.

Clear availability, careful wording, and documentation-first product pages.

COA documentation

COA documents are available on request. Uploaded batch files are kept private and linked to the relevant order.

Batch records

Product information is managed from the admin workspace with stock-led status.

HPLC purity standard

Product pages are structured around purity, COA, presentation, and storage details.

Listing controls

Public listings exclude higher-risk presentations and avoid medical positioning, use instructions, and human-use claims.

Order documents

Private COA access when available.

Certificate files are not exposed publicly. Ask orders@core-peptides.co.uk for the relevant document; uploaded files are linked to the customer order record.

Account document access

COA documents can be requested by email. When attached to an order, they are available securely from the customer account.

Request document access

Private document access

Order documents are tied to customer email and order reference rather than a public library.

View order basket

Batch-focused supply

Products that are not cleared for public listing are not shown in the catalogue.

Research-use checks

Helpful checks before ordering.

Use these checks to keep research-use orders documented and separate from any human or veterinary use.

What is a COA?

A Certificate of Analysis is used to reference product identity, purity, and batch documentation supplied with a completed order.

Read batch and COA guide

Where is storage shown?

Storage details are shown on each product page with the product record and supporting documentation.

Read storage and handling guide

Before requesting supply

Confirm the product is suitable for lawful laboratory research and that the order is not for human or veterinary use.

Read delivery and tracking guide
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