Every product batch comes with a full COA from an independent, accredited laboratory - transparency you can verify.
COA issued for 100% of batches - not spot checks, not samples.
Request the COA for your specific order batch via support ticket in minutes.
No in-house testing. All COAs issued by ISO 17025 accredited third parties.
A Certificate of Analysis (COA) is a formal document from an independent laboratory that certifies the quality and composition of a specific product batch. Each COA for our peptides includes:
| Parameter | Method | Our Specification |
|---|---|---|
| Identity (sequence confirmation) | Mass Spectrometry (MS/MS) | Matches target peptide |
| Purity | HPLC (UV 220nm) | ≥ 99.0% |
| Appearance | Visual inspection | White to off-white powder |
| Moisture | Karl Fischer titration | ≤ 6.0% |
| Microbial limits | USP <61> | Meets specification |
| Net weight | Gravimetric | Meets label claim ± 5% |
All COAs are issued by janoshik.com - an independent, accredited laboratory trusted by the research community for peptide and compound analysis. Janoshik has no commercial relationship with our suppliers.
