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How is this tea tree oil tested for heavy metals and pesticide residues?

Every batch is tested for heavy metals and pesticide residues before release, with results on the COA — essential for cosmetic, personal-care and therapeutic supply chains.

Testing Coverage

CategoryParameters
Heavy metalsLead (Pb), arsenic (As), mercury (Hg), cadmium (Cd) — limits per EU/USP/GB
PesticidesMulti-residue scan (organochlorines, organophosphates, pyrethroids) per EU MRL / GB 2763
Additional on requestPAH4, plasticizers, dioxins, mycotoxins
  • Testing by accredited third-party labs: ICP-MS (metals), GC-MS/MS (pesticides)
  • Plantation management follows good agricultural practice to minimize pesticide use
  • Results summarized on the COA; full lab reports available on request
  • EU-bound orders can be tested against the full EU MRL list; US orders against FDA/USDA limits
  • Extra parameters can be added to the panel — usually a few extra days of lead time

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Guilin Four Seasons Sunshine

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.