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Global Organic Textile Standard logo
Global Organic Textile Standard
Global · Tier 2 Trusted
Tún (Iceland) logo
Tún (Iceland)
Iceland · Tier 1 Gold
Bioland logo
Bioland
Germany · Tier 2 Trusted
What it meansThe strictest, most widely-recognised standard for organic textiles. Covers the full supply chain from organic fibre to finished garment, with environmental AND social criteria.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.Germany's largest organic farmers' association. Bioland-certified farms operate to a stricter private standard than the EU baseline.
ScopeTextilesFoodFood
Established200219941971
InspectionAnnual on-site, IOAS-accreditedAnnual on-site, MAST-accreditedAnnual on-site by Bioland-accredited inspectors
Residue testingRequired for finished productsRequired for at-risk operationsRequired
Guarantees
  • ≥70% certified-organic natural fibre (the 'organic' grade requires ≥95%).
  • Restricted dyes, no chlorine bleach, no formaldehyde, no banned heavy metals.
  • Wastewater treatment requirements.
  • Social standards based on ILO core conventions (no child labour, no forced labour, fair wages, safe workplace).
  • Annual on-site inspection by IOAS-accredited certifier.
  • ≥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).
  • Whole-farm conversion (no parallel conventional production).
  • Lower permitted nitrogen inputs than EU baseline.
  • Animal welfare standards stricter than EU baseline.
  • Annual on-site inspection.
Does NOT
  • Doesn't cover non-textile components (zips, buttons, prints) beyond the chemical-restriction list.
  • There aren't many Tún-certified operations (~120–160) — coverage in the Icelandic market is narrower than in the EU mainland.
  • Like Naturland, membership-based — only Bioland-association farms can use the mark.

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