Do you issue a Certificate of Analysis for every batch?
Yes. A Certificate of Analysis (COA) accompanies every batch and is the primary document for accepting, retesting and tracing your valerian oil. It covers the parameters below and is traceable by batch number.
COA Content
| Parameter | Value / range |
|---|---|
| Appearance | Clear to pale yellow-green to deep brown-green mobile liquid |
| Odour | Strong characteristic valerian, earthy-green, balsamic-animalic |
| Relative density (20 °C) | 0.910–0.995 |
| Refractive index (20 °C) | 1.470–1.510 |
| Optical rotation (20 °C) | −38° to −8° |
| Acid value | ≤ 13 mg KOH/g |
| GC-MS markers | Camphene 9–29%; bornyl acetate 21–41% |
| Heavy metals | Lead ≤ 10 mg/kg; arsenic ≤ 3 mg/kg (stricter T/YNZYC limits on request) |
| Pesticide residues | Screened per GB 2763; full multi-residue report on request |
- The COA is issued within 5 working days after production, before shipment
- GC-MS chromatogram is attached for identification and fingerprint comparison
- For export, we add an English COA with the same data set; EU batches can include allergen quantification and SDS
- Retained samples (24 months) allow independent re-testing at any time
- All COA fields reference the batch number, which is printed on the container label
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บทความนี้เผยแพร่เมื่อ 2026-09-07 และอัปเดตล่าสุดเมื่อ 2026-09-07 โดยจะมีการปรับปรุงเนื้อหาอย่างต่อเนื่อง
