Do you issue a Certificate of Analysis for every batch?
Yes — every single batch of TPS-RO-012 green mandarin oil is released with a full Certificate of Analysis (CoA) before shipping. The CoA is traceable to the batch number printed on every drum and jerrican, so you can verify arrival quality against the exact production run.
What the CoA States
| Section | Content |
|---|---|
| Identity | Batch number, production date, botanical source (Citrus reticulata var. unshiu), part used (unripe peel), origin |
| Physical constants | Relative density, refractive index, optical rotation, peroxide value, acid value, evaporation residue |
| Component profile | GC-MS: D-limonene, gamma-terpinene, alpha/beta-pinene, MNMA, linalool, and other key markers with % |
| Purity | Appearance, solubility, winterization/cooling test, absence of adulterants |
| Safety | Flash point, GHS classification, UN 1993 confirmation |
| Compliance | Pass/fail against GB 29938-2020, ISO 3528:2012 (Green), and FCC 12 as requested |
- The CoA is issued in both Chinese and English, stamped and signed by our QC department
- For regulated markets, the CoA can be accompanied by the SDS, IFRA CoC, and a letter of origin
- We keep retained samples of every batch for 24 months — any dispute can be checked against the archive
- If your customer requires an independent lab report, we can arrange third-party testing (SGS, Intertek) at cost
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This article was published on 2026-09-07, and last updated on 2026-09-29. The article will be continuously updated.
