Nothing to Mix or Measure.
Premium peptide research pens manufactured to the highest standards. Trusted by researchers across the United Kingdom.
Lab Verified
Chill Packed
SSL Protected
Lab Verified
High-quality peptide research compounds in convenient pen format.
Nothing to Mix or Measure
Wholesale prices start from 10 Kits
KLOW Blend Research Peptide
A convenient peptide blend containing BPC-157, GHK-Cu, TB-500, and KPV, supplied in a discreet pen format with its own storage case. Comes with extra needles in seperate bag.
Product Details
Brand: UKPENS
Intended Use
For laboratory research and in-vitro use only. Not for human or veterinary application.
KLOW Blend is supplied strictly as a research reagent. No dosing, administration, or physiological-use guidance is provided.
Quality & Storage
Batch and testing information should accompany the product where applicable. Store according to the conditions specified on the product label.
£89.99
Nothing to Mix or Measure
Wholesale prices start from 10 Kits
Glow Blend Pen supplied by Ukpens.net in a convenient research pen format. The product contains a total of 70 mg. Comes with extra needles in seperate bag.
Intended Use:
For laboratory research and in-vitro use only. Not for human or veterinary application.
UKPENS supplies this product strictly for laboratory and research purposes only. No guidance on human treatment, dosing, administration, or physiological use is provided.
All UKPENS research products are intended solely for laboratory research and in-vitro applications. They are not intended for human or veterinary use, nor do they include dosing, administration, or physiological guidance.
£89.99
UKpens.net supplies Top grade research compounds across the United Kingdom. All products are strictly for in-vitro research use only.
Every batch is independently tested
Purity
Researchers
Dispatch
All products sold on UKpens.net are intended strictly for in-vitro research and laboratory use only. These products are not for human consumption, medical use, or diagnostic purposes. By purchasing from this website, you confirm that you are a qualified researcher and will use these compounds in accordance with all applicable laws and regulations. The buyer assumes all responsibility for proper handling, storage, and use. UKpens.net does not endorse the misuse of any research compounds.
FAQ
The details that matter before you order: purity, documentation, handling, and delivery.
All UKPENS products are supplied strictly for laboratory research and in-vitro use only. They are not intended for human consumption, medical use, veterinary use, or diagnostic purposes.
At UKpens.net, we know that fast, reliable delivery is an important part of the service we provide. Every order is carefully packed, securely sealed and dispatched from our UK facility with discretion and professionalism.
UK Delivery
We currently ship to UK addresses only.
Shipping Method
All orders are sent using Royal Mail Tracked 24, providing full end-to-end tracking and delivery updates.
Shipping Cost
£5.15 flat-rate shipping on all UK orders.
Same-Day Dispatch
Orders placed before 11:00am (Monday–Saturday) are usually dispatched the same working day.
Orders received after 11:00am, on Sundays, or on UK Bank Holidays will be dispatched on the next working day.
Delivery Times
Royal Mail Tracked 24 aims to deliver parcels the next working day after dispatch.
While the vast majority of orders arrive on time, delivery timeframes are provided by Royal Mail as a target rather than a guarantee. Occasionally, delays can occur that are outside of our control.
Order Tracking
Once your order has been dispatched, you’ll receive a shipping confirmation email containing your Royal Mail tracking details so you can follow your parcel every step of the way.
Discreet Packaging
Your privacy matters.
Every UKpens.net order is shipped in plain, unbranded packaging with no indication of the contents, ensuring a discreet delivery experience.
Important Information
Please ensure your delivery address is accurate and complete before placing your order.
UKpens.net cannot accept responsibility for delays once a parcel has been handed to Royal Mail.
Orders returned due to an incorrect or incomplete address may incur additional postage charges before they can be re-dispatched.
If your parcel has not arrived within the expected timeframe, please contact us and we’ll be happy to assist.
Need Help?
If you have any questions about shipping or your order, our customer support team is here to help.
Email: ukpens@mailfence.com
Product contents can vary by product and batch. Please check the individual product listing for the specific format, quantity, composition, and documentation supplied.
Always follow the storage conditions provided on the product label.
Retatrutide pens or related peptide injectables can generally tolerate room temperature (up to 86°F or 30°C) for short periods, typically up to 21 days.
Temperature limit: Room temperature storage up to 86°F (30°C) is generally tolerated for a maximum of 21 days.
Ukpens is a UK supplier of premium research peptides, committed to delivering exceptional product quality, independent laboratory verification and outstanding customer service.
Our philosophy is built on three principles: Quality. Transparency. Trust.
Every batch we supply is independently tested before release, every product is supported by a batch-specific Certificate of Analysis, and every customer receives honest, knowledgeable support from a UK-based team.
Ukpens is proudly based in the United Kingdom, with all UK orders dispatched from our UK distribution centre for fast, reliable delivery.
Yes.
Research peptides can legally be purchased within the UK for legitimate laboratory and scientific research purposes.
All products supplied by Ukpens are clearly labelled For Research Use Only and are not intended for human or veterinary use.
At Ukpens, we believe trust is earned through transparency, not marketing claims.
Every batch undergoes independent laboratory verification before it reaches our customers.
Every product is backed by:
Independent HPLC Purity Testing
LC-MS / Mass Spectrometry Identity Confirmation
LAL Endotoxin Testing
ICP-MS Heavy Metal Screening
Batch-specific Certificate of Analysis (CoA)
Our mission is simple, to supply research peptides that meet the highest standards of quality, consistency and transparency.
Every batch supplied by Ukpens is independently analysed before release.
Each Certificate of Analysis confirms:
Peptide identity
Peptide purity
Laboratory test results
Date of analysis
This allows every customer to verify exactly what they are purchasing.
Purity refers to the percentage of the desired peptide contained within a sample.
Higher purity means fewer unwanted synthesis by-products, providing greater consistency and reliability for research applications.
We only release products that meet our strict internal quality standards.
Quality at Ukpens goes far beyond purity testing.
Depending on the product, our quality assurance programme includes:
HPLC Purity Analysis
LC-MS Identity Confirmation
LAL Endotoxin Testing
ICP-MS Heavy Metal Analysis
This comprehensive testing programme provides researchers with complete confidence in every batch supplied.
We work exclusively with carefully selected manufacturing partners who operate under recognised quality systems.
Every batch is independently verified before entering our inventory.
We never rely solely on manufacturer documentation; independent laboratory testing provides the assurance.
Proper storage helps preserve peptide integrity throughout its shelf life.
Once reconstituted, peptides (pens) should be refrigerated between 2°C and 8°C and protected from direct light.
For optimum stability, we recommend using reconstituted peptides within approximately 30 days, although this may vary depending on the individual peptide.
Repeated freeze-thaw cycles should be avoided wherever possible as they may reduce peptide stability.
Researchers intending to use peptides over longer periods often prepare smaller aliquots during reconstitution to minimise repeated temperature changes.
No.
Whether you’re purchasing a single vial or placing a larger laboratory order, we’re happy to help.
We currently accept secure UK bank transfers via Fena, which is the payment method available at checkout.
We are currently working to restore credit and debit card payment facilities. Card processing for research chemical suppliers is an area where payment providers apply additional scrutiny, which can make maintaining card acceptance more challenging. This is a well-known issue across the sector and is not a reflection of our compliance standards or business standing.
We apologise for any inconvenience this may cause and will update this page as soon as card payments are available again.
We’re continually reviewing our payment options, and additional payment methods may be introduced in the future.
Yes.
We offer competitive pricing for universities, laboratories, research organisations and customers purchasing larger quantities.
Please contact our team for a bespoke quotation.
Ukpens ships throughout the UK and to selected international destinations where permitted by local regulations.
If you’re unsure whether we can ship to your location, please contact us before placing an order.
Orders for in-stock products are normally dispatched within one working day.
Tracking details are emailed as soon as your order leaves our warehouse.
Yes.
Every order is shipped in plain, discreet outer packaging with nothing visible to identify the contents.
Absolutely.
Every order is shipped using a fully tracked delivery service so you can monitor your parcel from dispatch to delivery.
Your satisfaction is important to us.
If your order arrives damaged, incomplete or if you have any concerns, please contact our team immediately, and we’ll work quickly to resolve the matter.
Should your shipment be confirmed as lost by the courier, we’ll arrange either:
A replacement order, or
A full refund
We’ll keep you updated throughout the process.
Due to the nature of research chemicals, returns are generally accepted only for unopened products in accordance with our Returns Policy and UK consumer legislation.
Please contact us before returning any items.
Quality is more than a promise—it’s the foundation of Ukpens.
Every batch is independently tested before release because researchers deserve complete confidence in the products they purchase.
Our quality assurance programme includes:
Independent HPLC Purity Testing
LC-MS Identity Confirmation
LAL Endotoxin Testing
ICP-MS Heavy Metal Analysis
Batch-specific Certificates of Analysis
Complete Batch Traceability
Controlled Storage Procedures
UK-Based Customer Support
We believe transparency should be the industry standard.
Every batch is verified before it reaches your laboratory.
All products supplied by Ukpens are sold strictly for laboratory and scientific research purposes only.
They are not intended for human consumption, therapeutic use, veterinary use or diagnostic applications.
Customers are responsible for ensuring they comply with all applicable laws and regulations within their jurisdiction.
