Verification
Before any lot is released, an independent contract laboratory quantifies its purity by HPLC and confirms its molecular weight by mass spectrometry, working from a representative sample of the lot. The resulting certificate is signed, dated, and tied to the lot identifier printed on every vial.
- HPLC + MS verified
- ≥99% purity
- Lot-traceable
- United States
Process
What verified means
- 01SynthesisUSA · Audited facility
Peptides are built by solid-phase synthesis under cleanroom protocol. Every crude product is entered against a unique lot identifier in the format HRL-YYWW-xxxN, which stays with the material through every later step.
- 02LyophilizationSealed amber glass · Inert atmosphere
The material is dried under vacuum and sealed in amber glass under inert gas. Once sealed it is stable at ambient temperature, and each vial is labelled with its lot, fill mass, and synthesis date.
- 03Independent assayHPLC + MS · Third-party
A representative sample from every lot goes to an independent contract laboratory, which quantifies purity by HPLC and confirms molecular weight by mass spectrometry.
- 04Certificate releaseLot-linked PDF
A signed certificate is tied to the lot identifier and made available with the order before any shipment leaves the facility.
Eligibility
Researcher attestation
At checkout, every purchaser affirms that they are a qualified researcher 21 years or older, and that the material will be used only for in vitro analytical work and never introduced into a human or animal subject. This attestation is recorded with each order and travels with the lot it covers.
Read the full clause language on the research use policy →HRL-DOC-V · REV 2026.07