Do you provide a Certificate of Analysis (COA) with every batch?
Yes. Every batch of perilla leaf oil ships with a full COA plus a GC-MS chromatogram, and retained samples are kept for at least 24 months.
COA Contents
| Section | Parameters |
|---|---|
| Identity | Botanical name, chemotype (PA), batch number, production date |
| Physical | Appearance, color, relative density (20°C), refractive index (20°C) |
| Chemical | Perillaldehyde content, GC-MS fingerprint, rosmarinic acid (HPLC) |
| Safety | Heavy metals (Pb ≤ 0.15 mg/kg), pesticide residues (GB 2763), microbial counts |
| Documents | Expiry date, storage conditions, shelf life (36 months) |
- GC-MS identifies up to 97 compounds per the ISO 11024-1/2 method
- HPLC quantifies rosmarinic acid — the non-volatile quality marker
- Additional third-party testing (e.g., ISO 17025-accredited lab re-analysis) can be arranged on request
- Retained samples allow traceability and re-verification for up to 24 months after dispatch
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This article was published on 2026-09-07, and last updated on 2026-09-07. The article will be continuously updated.
