Every batch
Independently tested
Free UK delivery over £100·Tracked & discreet dispatch·For laboratory research use only
About Tiva
A research supplier
A research supplier
that shows its work.
Tiva supplies peptide reference materials for laboratory research — a focused range, documented end to end, with every batch independently verified.
Tiva began with a simple frustration: sourcing research peptides too often meant taking purity, identity and handling on trust. We wanted the opposite — a supplier that operates like a laboratory, not a marketplace.
So we set our standards first and built the catalogue around them. A short, deliberate range. Independent testing on every batch. Documentation published for every batch. And a firm line on what these materials are for: research, and research only.
Our standards
How we work
Four things we don't compromise on.
◇
Independently testedEvery batch is analysed by a third-party laboratory — RP-HPLC with diode-array detection, plus mass-spec identity. We don't grade our own work.
▤
Documented end to endA certificate of analysis is issued for every batch and published on the site, matched to the batch code on the label.
✓
Sourced & controlledMaterials sourced to specification, checked on arrival, and stored correctly — lyophilised, cold and sealed — to protect stability.
✦
Compliant by designSupplied strictly for laboratory research use only. No health claims, no dosing guidance — ever.
◇ Testing you can verify
- Identity and purity confirmed by reverse-phase HPLC with diode-array detection.
- Mass-spectrometry identity confirmation on every batch.
- Analysis performed by an independent laboratory — not in-house.
- Typical purity ≥99%; the exact figure is stated on each certificate.
▤ Documentation as standard
- A certificate of analysis is issued for every batch.
- Each COA is batch-traceable to the code printed on the vial.
- Certificates available on request before you order.
- Storage, shelf-life and handling notes travel with each batch.
Run properly
People who take this seriously.
Tiva is run with process, documentation and accountability — the way a laboratory would handle these materials. We hold ourselves to the standard we would expect ourselves, because the people who rely on these compounds deserve nothing less.
On the site
Certificate published
Every vial
Batch-traceable
Research use
Only, always
Questions
About Tiva — FAQ
Who are Tiva?
A UK supplier of peptide reference materials for laboratory research. We keep the range tight and well-documented, and we run it with proper process rather than as a marketplace.
How do I know the purity is genuine?
Every batch is tested by an independent third-party laboratory (RP-HPLC with diode-array detection, plus mass-spec identity). The certificate of analysis is published on our certificates page and matches the batch code on the label.
Do you test in-house or use an external lab?
Externally. Analysis is performed by an independent laboratory — not by us — so there is no marking our own homework.
Are these products for human use?
No. Everything is supplied strictly for laboratory research use only. Our products are not medicines and are not for human or animal consumption, diagnosis or treatment.
Can I see a certificate before I order?
Yes. Ask our team and we will send the certificate of analysis for the batch.
How are orders packaged and shipped?
In plain, unbranded, discreet packaging via Royal Mail Tracked 24, dispatched within one working day. A tracking number follows every order.
How should the materials be stored?
Keep the sealed vial frozen (−20°C), away from light and moisture. Full storage and shelf-life details are on each batch certificate.