Do you issue a Certificate of Analysis (COA) for every batch?
Yes. Every batch of this lemongrass oil is released with a COA plus its GC-MS chromatogram. The COA covers the identity checks (density, refractive index, optical rotation), the composition markers (citral, myrcene, geraniol, limonene, linalool), and, for food-grade batches, heavy metals and microbiological data.
COA Content
| Parameter | Typical method | Value on COA |
|---|---|---|
| Appearance / colour | Visual | Clear, pale yellow to amber |
| Relative density (20°C) | Pycnometer / density meter | 0.872 - 0.900 |
| Refractive index (20°C) | Abbe refractometer | 1.483 - 1.489 |
| Optical rotation (20°C) | Polarimeter | -3° to +1° |
| Citral (carbonyl as citral) | NaHSO3 adduct / GC-FID | ≥75% (FCC/ISO grade) |
| Myrcene | GC-FID | <20% |
| Acid value | Titration | ≤2.0 mg KOH/g |
| Heavy metals (food grade) | AAS/ICP | Pb ≤2 mg/kg, As ≤1 mg/kg |
| Microbiological (food grade) | Plate count | TAC ≤1,000 CFU/g, Y&M ≤100 CFU/g |
- The COA is linked one-to-one to the batch number on the shipping documents for full traceability
- GC-MS fingerprint files can be provided in digital format for your own verification or archiving
- A certificate of authenticity, IFRA 51st usage certificate and EU 2023/1545 allergen declaration are available on request
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บทความนี้เผยแพร่เมื่อ 2026-09-07 และอัปเดตล่าสุดเมื่อ 2026-09-07 โดยจะมีการปรับปรุงเนื้อหาอย่างต่อเนื่อง
