How are heavy metals and pesticide residues controlled and tested?

Heavy metals by ICP-MS / AAS per ChP 2020 general method 0721: Pb <10 ppm, As <2 ppm, Hg <1 ppm; Cd and Cu reported. Pesticide residues screened by GC-MS/MS against the ChP 2025 and GB 2763 limits for edible herbs; microbial loads tested per ISO 21149/16212 (aerobic bacteria <100 CFU/g, yeast & mould <10 CFU/g). All results appear on the batch COA; third-party re-testing can be arranged on request.

This article was published on 2026-09-07, and last updated on 2026-09-07. The article will be continuously updated.

Guilin Four Seasons Sunshine

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Founded in 2006, Guilin Four Seasons Sunshine F&F Co., Ltd. is a natural plant extract manufacturer and OEM/ODM partner in Guilin, China, combining proprietary Living-Fragrance physical extraction with supercritical fluid extraction to deliver pure, traceable botanical ingredients to global food, flavor, fragrance and personal care brands.

How are heavy metals and pesticide residues controlled and tested?

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