You should not have to take purity on faith.
Every product in the Vialoxa catalogue has undergone independent testing - identity by mass spectrometry and purity by reverse-phase HPLC.
What is actually on the paperwork.
Certificates shown here explain the identity checks, measured purity and specification used in independent product testing. They are provided as representative product documentation.
- Purity is not identity
A high HPLC figure only tells you the main peak is dominant. Mass spectrometry confirms whether that peak is the sequence on the label, so our product testing uses both methods.
- Net peptide content matters
Lyophilised material carries counter-ions and residual moisture. Net peptide content tells you how much peptide is actually in the vial, so your dosing maths holds from vial to vial.
- Representative documentation
Certificates shown on our site document independent product testing and are provided as representative documentation for each product.
| Test | Specification | Result |
|---|---|---|
| HPLC purity | ≥ 99.0% | 99.4% ✓ |
| Mass-spec identity | Conforms | Confirmed ✓ |
| Net peptide content | Report | 92.7% ✓ |
| Moisture (Karl Fischer) | < 5.0% | 3.1% ✓ |
| Appearance | White lyophilised cake | Conforms ✓ |
Six steps in our quality process.
Our products follow a defined sourcing, testing, filling and release process, with independent test results verifying every product.
Solid-phase peptide synthesis under controlled conditions with vetted UK and EU partners, then cleaved and purified to specification.
Preparative reverse-phase HPLC removes truncated and deletion sequences until the lot meets our release specification.
Molecular mass is confirmed by MALDI-TOF or ESI mass spectrometry against the theoretical mass for the sequence.
Analytical reverse-phase HPLC quantifies product purity and reports the figure to one decimal place.
Lyophilised, filled under inert atmosphere into borosilicate vials, crimp-sealed and protected from light.
Products are released to specification and dispatched from the UK or EU, typically within 24 hours.
Protect the material after delivery.
Store at −20 °C, desiccated and protected from light. Follow the storage guidance shown on the product page.
Lyophilised material tolerates ambient transit; refrigerate on arrival and freeze for long-term storage.
Handle under aseptic laboratory conditions. Reconstituted material has a materially shorter working life.
Keep the product page and representative testing documentation with your laboratory records.
Crimp-sealed and light-protected, vial by vial.
Every product independently tested and documented.
Independent product testing, clearly explained.
Browse the catalogue of independently tested reference peptides. For laboratory research use only.
View the catalogue↗