How are heavy metals and pesticide residues controlled and tested?
Heavy metals and pesticide residues are tested on every batch; the red perilla oil specification sets one of the strictest lead limits in the essential-oil industry.
Testing & Limits
| Parameter | Limit | Method |
|---|---|---|
| Lead (Pb) | ≤ 0.15 mg/kg (2025 red perilla spec) | AAS / ICP-MS |
| Other heavy metals | Per GB 2762 contaminant limits | AAS / ICP-MS |
| Pesticide residues | Per GB 2763 MRLs | GC-MS / LC-MS/MS multiresidue |
| Rosmarinic acid | ≥ 3.2% (spec) / 0.11–1.02% (ChP) | HPLC |
- The 0.15 mg/kg lead limit is about 67x stricter than common essential-oil guidance — a direct consequence of the 2025 SAMR red perilla specification
- Raw leaves are screened at intake (fresh purple-red material from controlled Dao-di farms), then the distilled oil is re-tested
- Batch COA and, on request, ISO 17025-accredited third-party reports are provided for customs and brand compliance
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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.
