Quality & testing
Peptide Quality & Testing
HPLC purity, a batch-specific Certificate of Analysis, and cold-chain handling - the evidence behind every order.
Reproducible research depends on knowing exactly what is in the cartridge. Batches are HPLC tested, their certificates are published in the COA library, and every order is handled cold-chain to protect stability - so the figure on your COA is a measured value, not a marketing claim.
Our research-supply standards
HPLC Tested
Batches are tested by high-performance liquid chromatography. The measured figures are printed on the batch COA, and we publish them as reported.
Published Batch COAs
Batch certificates are published in the COA library, so you can read them before you order.
UK Dispatch
Orders are prepared and dispatched by our team within 1 to 2 working days, with tracked delivery as standard.
Research-Only Supply
All compounds are supplied strictly for in-vitro laboratory research. Documentation, labelling and packaging reflect that restriction.
Our research compound catalogue
The evidence chain behind every pen
A research compound is only as useful as its documentation. For every Celyfe pen the chain runs: raw material sourced with its own certificate, filled and sealed in our facility under a batch number, a sample of that batch sent to a third-party laboratory for HPLC, the laboratory certificate published on the product page and in the COA library. Each link is traceable to the one before it.
How HPLC purity and the batch COA fit together
HPLC separates the contents of a sample and reports how much of it is the target compound. The certificate records that number alongside the compound name, the batch identifier, the method and the test date. Because our cartridges are pre-mixed, the certificate describes exactly the solution that is dispensed, not a powder that is later reconstituted at the bench.
Why cold-chain handling and fast dispatch protect the result
A peptide in solution is less forgiving than a powder. Every order leaves in a sealed foil pouch with ice packs inside a plain box, and leaves within 1 to 2 working days on a tracked service. That is what keeps the purity on the certificate the purity in the cartridge.
Evidence chain
Raw material certificate, batch number, third-party HPLC, published COA.
Frequently asked questions
High-performance liquid chromatography separates the components of a sample as they pass through a column. The area under the main peak relative to all peaks gives the purity percentage recorded on the COA.
Order research compounds with documentation
Browse the full catalogue, view the COA library for a recent batch.