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	Australian Certified Organic Australia · Tier 1 Gold	Soil Association Organic United Kingdom · Tier 2 Trusted	Bio-Siegel (Germany) Germany · Tier 1 Gold
What it means	Australia's largest organic certifier, accredited under the Australian National Standard for Organic and Bio-Dynamic Produce. The bud-and-leaf logo is the most-seen organic mark in Australian supermarkets.	The UK's largest organic certifier. Standards are stricter than the UK government's baseline (which still mirrors EU 2018/848 post-Brexit). Recognised by the EU and USA under equivalence.	Germany's national organic mark, owned by the Federal Ministry of Food and Agriculture. Sits alongside the EU Leaf on most German organic packaging since 2001. Same standard as the EU Leaf — Bio-Siegel is the brand consumers recognise.
Scope	Food	Several categories	Food
Established	2002	1946	2001
Inspection	Annual on-site, ACOS-accredited	Annual on-site, UKAS-accredited	Annual on-site by EU-accredited German control body
Residue testing	Risk-based	Risk-based	Risk-based
Guarantees	≥95% organic ingredients. No synthetic pesticides, no GMOs. Annual on-site inspection. Animal welfare and biodynamic-compatible production options.	Stricter-than-baseline organic standards across food, textiles, cosmetics, and farming. Annual on-site inspection. Animal welfare standards (outdoor access, lower stocking density).	EU baseline organic (EU 2018/848). Annual on-site inspection by accredited German certifier.
Does NOT	Australia has no single mandatory organic mark — ACO is the dominant one, but NASAA, OFC, and others also certify.	Logo is trademarked — not a free-licence mark.	Same standard as the EU Leaf — not stricter.

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