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OTC
OEKO-TEX Organic Cotton
Global · Tier 2 Trusted
Non-GMO Project Verified logo
Non-GMO Project Verified
United States · Tier 3 Specialty
Tún (Iceland) logo
Tún (Iceland)
Iceland · Tier 1 Gold
What it meansLaunched April 2023 by the OEKO-TEX Association. A separate certificate from Standard 100 that combines the Standard 100 chemical-residue test with verified organic-cotton supply chain — addressing the long-standing confusion that Standard 100 alone is NOT an organic mark.North America's leading 'no genetically modified organisms' certification. Tests for the presence of GMOs in finished products. NOT organic.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.
ScopeTextilesFoodFood
Established202320101994
InspectionAnnual on-site by OEKO-TEX-accredited institute (Hohenstein et al.)Annual third-party audit + lab testingAnnual on-site, MAST-accredited
Residue testingRequired (Standard 100 panel + GMO/pesticide screening)GMO testing only (not pesticide)Required for at-risk operations
Guarantees
  • Two grades: 'Organic Cotton' (100% certified-organic cotton) and 'Organic Cotton Blended' (≥70% certified-organic cotton).
  • Full Standard 100 chemical residue test on the finished product.
  • Additional GMO test + pesticide residue test specific to organic farming.
  • Verified chain of custody from farm to finished product.
  • Annual re-certification with independent OEKO-TEX institute audits.
  • Verified absence of GMO ingredients (with action thresholds, not zero tolerance).
  • Annual third-party verification.
  • Tracing and segregation across the supply chain.
  • ≥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 the social/labour conditions across the supply chain in the way GOTS does (use OEKO-TEX STeP for that, or pair with GOTS).
  • Cotton-only — doesn't apply to other organic fibres (wool, hemp, linen).
  • Doesn't mean organic — Non-GMO products can use synthetic pesticides and fertilizers freely.
  • 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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Compare certifications · Organic.is