Do you provide a Certificate of Analysis (COA) for each batch?
Yes — a Certificate of Analysis (COA) is issued for every batch of patchouli oil and travels with the shipment. The COA documents the measured values against the release specification and carries the batch number, production date, expiry date and the authorised signature of the QC department.
What the COA Reports
| Parameter | Example value |
|---|---|
| Appearance | Viscous amber to dark brown-red liquid |
| Odour | Deep earthy-woody-sweet patchouli character |
| Relative density (20°C) | 0.955-0.985 |
| Refractive index (20°C) | 1.505-1.515 |
| Optical rotation (20°C) | −35° to −60° |
| Patchoulol (GC-FID) | 27-35% (by grade) |
| Acid value | ≤4.0 |
| Ester value | ≤10 |
| Solubility (90% ethanol 1:10) | Clear |
| Purity | 100% natural, undiluted |
Additional Documents per Batch
- GC-MS chromatogram report with component table
- SDS in the destination language
- IFRA 51 compliance certificate and EU allergen declaration
- Halal/Kosher/organic certificates for the corresponding grades
Delivery and Validity
- The COA is e-mailed in PDF form at dispatch; originals can follow with the shipping documents if required
- COA and MSDS records are archived by batch for at least 5 years and can be re-issued on request
- For destination-market approvals, additional reports (heavy metals, pesticide residues, 21 CFR compliance) are prepared 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.
