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USDA Organic logo
USDA Organic
United States · Tier 1 Gold
Demeter International logo
Demeter International
Global · Tier 2 Trusted
Tún (Iceland) logo
Tún (Iceland)
Iceland · Tier 1 Gold
What it meansThe US Department of Agriculture's national organic standard. The green-and-white seal is the legal mark for any food sold as 'organic' in the United States.The certification mark for biodynamic agriculture. Stricter than any government organic standard: it covers the entire farm as a closed ecosystem, follows a planting calendar tied to lunar/solar cycles, and bans many practices the baseline organic rules permit.Vottunarstofan Tún is Iceland's only accredited organic certifier. Accredited by MAST (Matvælastofnun) under the EU 2018/848-equivalent Icelandic standard, so a Tún-certified product is also recognised as EU-organic.
ScopeFoodSeveral categoriesFood
Established200219281994
InspectionAnnual on-site by USDA-accredited certifierAnnual on-site by Demeter-accredited inspectorsAnnual on-site, MAST-accredited
Residue testingRequired on ≥5% of operations annuallyRisk-based on top of organicRequired for at-risk operations
Guarantees
  • At least 95% of ingredients are certified organic (the '100% Organic' variant requires every ingredient).
  • No synthetic pesticides, no synthetic fertilizers, no GMOs, no sewage sludge, no irradiation.
  • Annual on-site inspection by a USDA-accredited certifier.
  • Residue testing on at least 5% of certified operations each year.
  • All organic standards PLUS biodynamic preparations and whole-farm planning.
  • Whole-farm certification (not single fields/products).
  • Annual on-site inspection by Demeter-accredited inspectors.
  • Animal welfare standards stricter than baseline organic.
  • ≥95% organic ingredients per EU rules.
  • No synthetic pesticides, no GMOs.
  • Annual on-site inspection.
  • Animal welfare standards (outdoor / pasture access, geothermally-warmed greenhouse compatibility for vegetables).
Does NOT
  • Doesn't certify nutrition, taste, or animal welfare specifically (separate marks like AWA cover welfare).
  • Doesn't guarantee local production — a 'USDA Organic' product can be grown anywhere with an accredited inspector.
  • Biodynamic philosophy includes esoteric elements (lunar planting, herbal preparations) that many scientists view as non-evidence-based — the agronomic outcomes are still good, the underlying claims about cosmic forces are not testable.
  • There aren't many Tún-certified operations (~120–160) — coverage in the Icelandic market is narrower than in the EU mainland.

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