Do you provide a Certificate of Analysis (COA) for every batch?
Yes — every batch of storax balsam oil ships with a full Certificate of Analysis covering identity, purity, physicochemical, and pharmacopoeia parameters, plus optional GC-MS chromatography on request.
COA Contents (per batch)
| Category | Parameters |
|---|---|
| Identity | Botanical source, part used, extraction method, product code (TPS-HO-008) |
| Physicochemical | Relative density (20°C), refractive index, acid value, saponification value |
| Composition | Total cinnamic acid (HPLC ≥ 23.0%), cinnamyl cinnamate 18.0%–25.0%, benzyl benzoate 12.0%–18.0%, GC-MS profile, ChP 8-peak fingerprint |
| Purity | Appearance, color, GC purity, solubility |
| Safety | Heavy metals (≤ 5 mg/kg), microbial limits (TAMC, TYMC, E. coli, Salmonella), residual solvents (if applicable) |
| Packaging | Filling date, lot number, net weight, storage condition, expiry |
- COA is issued by our QC lab (testing per ChP general methods 0512/0521/0502/0713 and GB/T methods) and counter-signed by QA
- GC-MS chromatograms and GC-FID composition reports are available for the supercritical CO2 and premium grades
- Pharmacopoeia-grade documentation packages (ChP, ISO 4720) are provided for regulatory submissions on request
- A sample COA template can be shared before ordering so your QA team can pre-approve the format
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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.
