Do you provide a Certificate of Analysis (COA) for every batch?
Yes. Every single batch of schisandra berry oil is released with a full Certificate of Analysis (COA).
COA Coverage
| Category | Parameters reported |
|---|---|
| Identity | Botanical origin, extraction method, GC-MS / HPLC fingerprint, compound profile (schisandrin, schisandrin B, etc.) |
| Physicochemical | Appearance, color, relative density (20°C), refractive index (20°C), solubility |
| Purity | Purity %, absence of additives/carriers |
| Safety | Heavy metals (Pb, As, Cd, Hg per GB 2762), pesticide residues (GB 2763), moisture, residual solvent (for CO2 grades: not detected) |
| Microbiological | Total plate count, yeast & mold, E. coli, Salmonella (food-grade batches) |
| Traceability | Harvest year, Dao-di origin, batch number, production date, expiration (36 months) |
- COA is issued in Chinese and English, aligned with GB/T 43256-2025 requirements
- HPLC (lignans) + GC-MS (fatty acid / volatile profile) dual reports are attached as standard
- Third-party SGS/CQC testing can be arranged on request
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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.
