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	Non-GMO Project Verified United States · Tier 3 Specialty	Global Organic Textile Standard Global · Tier 2 Trusted	Tún (Iceland) Iceland · Tier 1 Gold	EU Organic (Euro-Leaf) European Union · Tier 1 Gold
What it means	North America's leading 'no genetically modified organisms' certification. Tests for the presence of GMOs in finished products. NOT organic.	The 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.	The mandatory mark for any pre-packaged organic food sold in the EU. The 'Euro-Leaf' is a stylised leaf made of twelve white stars on a green background.
Scope	Food	Textiles	Food	Food
Established	2010	2002	1994	2010
Inspection	Annual third-party audit + lab testing	Annual on-site, IOAS-accredited	Annual on-site, MAST-accredited	Annual on-site by accredited control body in producer country
Residue testing	GMO testing only (not pesticide)	Required for finished products	Required for at-risk operations	Risk-based; mandatory at higher-risk operations
Guarantees	Verified absence of GMO ingredients (with action thresholds, not zero tolerance). Annual third-party verification. Tracing and segregation across the supply chain.	≥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).	At least 95% of agricultural ingredients are organic (regulation EU 2018/848). No synthetic pesticides, no synthetic fertilizers, no GMOs. Animal welfare standards (outdoor access, lower stocking density, no routine antibiotics). Annual inspection by an accredited control body in the producing member state. Mandatory display of the certifier's code and origin (e.g. 'EU Agriculture' / 'Non-EU Agriculture').
Does NOT	Doesn't mean organic — Non-GMO products can use synthetic pesticides and fertilizers freely.	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.	Doesn't ban the natural pesticides allowed under the regulation (copper sulphate, spinosad). Doesn't certify processed-food additives beyond the EU's permitted list.

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