Pureline Biolabs Ltd supplies research grade compounds strictly for laboratory and in vitro research purposes. By entering this site you confirm that:
Terms & Conditions · Privacy Policy
Pureline Biolabs Ltd · Company No. 17236739 · Registered in England & Wales · Not evaluated by the MHRA
Pureline Biolabs Ltd is a UK supplier of research-grade peptides. Every batch is independently analysed before it is listed, every vial carries a QR code to its own certificate of analysis, and storage temperature is logged continuously rather than assumed.
If you are buying on behalf of a university department, a commercial laboratory, a hospital research group or a contract research organisation, the questions you need answered are usually procedural rather than promotional. This is how we work.
We accept purchase orders from registered institutions. Payment terms are agreed at the quotation stage rather than assumed, because they depend on order size and whether this is a first order or an established account. Tell us what your finance process requires and we will tell you plainly whether we can meet it.
We provide formal written quotations that can be attached to a requisition. A quotation states the compound, quantity, unit and total price, lead time and delivery terms, and it carries our company registration number. If your procurement system needs a specific reference or format, say so in your enquiry.
Each order ships with the paperwork needed to trace what you received.
| Document | What it covers | How it is supplied |
|---|---|---|
| Certificate of analysis | Independent HPLC purity and mass spectrometry identity for the specific batch supplied | QR code on the vial, and published at our laboratory reports page |
| Batch number | Ties the vial in your hand to the certificate and to our own records | Printed on the vial label |
| Storage record | Temperature conditions under which the stock was held before despatch | Published cold-chain log, available per date range on request |
| Quantity analysis | Measured content where a quantitative assay has been commissioned for that batch | On the certificate where available, stated separately from purity |
Stock held in the United Kingdom normally despatches within 48 hours of a cleared order. Compounds not in stock depend on synthesis and independent testing turnaround, and we will give you a date rather than an estimate before you commit. Shipments travel cold, in a sealed inner bag inside an outer bag with two frozen gel packs, a method we have tested over both twenty-four and forty-eight hour transit windows.
If you need a sample certificate, a copy of our standard quotation format, or the cold-chain log for a particular date range to attach to an internal approval, ask and we will send them. None of that requires an order first.
Independent analysis is commissioned for each batch before it is listed for sale. We do not test in house and we do not issue our own certificates, because a supplier attesting to its own purity is not evidence.
Two articles set out how to read what those certificates actually say: what peptide purity figures actually mean and how to verify a certificate of analysis.
Stock is held in a pharmaceutical-grade refrigerator at 2 to 8 degrees Celsius with high and low temperature alarms. Temperature is read and recorded manually every day and logged continuously by a separate monitoring system, so the record does not depend on somebody remembering. The log is published at our cold-chain log page.
Why a peptide should be kept cold, and what appearance can and cannot tell you about a vial that has been shipped, are covered in what determines peptide half-life and why lyophilised vials look different.
We supply a limited number of trade partners at volume pricing. Trade accounts are for UK registered businesses operating in research and professional contexts.
Pricing is tiered by quantity and agreed per account rather than published, because it depends on the compounds and the pattern of ordering. Retail prices are visible on every product page, so you can see the baseline you are buying against before you enquire.
We can supply products under your own brand, with custom label design and outer packaging. Minimum quantities and lead times are confirmed at quotation, since both depend on the compound and the packaging specification. Ask in your enquiry and we will set out exactly what we supply and what we need from you.
To keep the supply chain accountable we ask for a company registration number and a business email address on your own domain. Accounts are approved individually. We decline more enquiries than we accept, which is deliberate.
Procurement due diligence is easier when a supplier states its limits rather than leaving you to discover them. These are ours.
| Claim | Our position |
|---|---|
| GMP certified | No. Our supplier cannot produce GMP documentation, so we removed every GMP reference from this site rather than keep a claim we cannot evidence. |
| ISO certified | No. The same applies. We are not ISO certified and do not describe ourselves as such. |
| Sterile | No. Products are not supplied sterile and no sterility testing is performed. |
| Endotoxin tested | No. Endotoxin analysis is a separate assay and is not part of our standard testing. |
| Pharmaceutical grade | No. These are research-grade materials. They are not medicines and hold no marketing authorisation. |
| Purity equals content | No. Our certificates report HPLC purity as area percent under the stated method. That is not a measure of milligrams in the vial, and we do not present it as one. |
| Suitable for human or animal use | No. Everything we supply is for in vitro laboratory research only, and not for human or veterinary use. |
If any of the above is a requirement for your work, we are not the right supplier and you should buy from a GMP-certified source. We would rather tell you that now than after a purchase order.
| Detail | Value |
|---|---|
| Registered name | Pureline Biolabs Ltd |
| Company number | 17236739, registered in England and Wales |
| Registered office | 128 City Road, London EC1V 2NX. This is our registered office for correspondence. Stock is held and despatched separately under the cold-chain conditions described above. |
| Supply territory | United Kingdom |
| Payment | Bank transfer and Pay by Bank. Purchase order terms agreed at quotation. |
| Enquiries | enquiries@purelinebiolabs.com, or the form below |
| Response time | Within 48 hours, Monday to Friday |
Yes, from registered institutions. Terms are agreed at the quotation stage rather than assumed, because they depend on order size and whether an account is already established.
Yes. Quotations state compound, quantity, unit and total price, lead time and delivery terms, and carry our company registration number. Tell us if your system needs a particular reference or format.
Yes. Each vial carries a QR code to the certificate for its own batch, and every certificate is published in full on our laboratory reports page. The certificate covers independent HPLC purity and mass spectrometry identity.
No. Our supplier cannot produce GMP documentation, so we do not make that claim. If GMP certification is a requirement for your work, we are not a suitable supplier.
No. Products are not supplied sterile and endotoxin analysis is not part of our standard testing. Both are separate assays from the identity and purity testing we commission.
We state a minimum of 98% chromatographic purity under the method shown on the certificate. That figure is an area percent and is not a statement of how many milligrams of peptide are in the vial.
Yes. Custom label design and outer packaging are available. Minimum quantities and lead times are confirmed at quotation, as both depend on the compound and the packaging specification.
Stock held in the United Kingdom normally despatches within 48 hours of a cleared order. For compounds not in stock we will give you a date before you commit, rather than an estimate.
Stock is held at 2 to 8 degrees Celsius in a pharmaceutical-grade refrigerator with high and low alarms, read manually every day and logged continuously by a separate monitor. The log is published, and we can supply it for a specific date range on request.
One form for both routes. Tell us which you are and we will reply from enquiries@purelinebiolabs.com, normally within 48 hours, Monday to Friday.
All products supplied by Pureline Biolabs Ltd are intended solely for in vitro laboratory research purposes. They are not medicines, not approved for human or veterinary use, and not for human consumption. Supply is subject to verification and approval. Pureline Biolabs Ltd · Company No. 17236739 · Registered in England and Wales
