OK Biobased Certificate

Independent testing of biobased (renewable) carbon share verified by TÜV Austria, expressed as a one-to-four-star rating: one star for 20–40% renewable carbon, two for 40–60%, three for 60–80%, and four stars above 80%.

• Biodegradability or compostability — TÜV Austria issues those as separate marks (OK compost, OK biodegradable); OK biobased proves neither.
• A lower carbon footprint — renewable carbon origin does not by itself prove lower lifecycle emissions.
• Full biobased composition — even four stars means above 80%, not 100%.
• Anything about how the biomass was grown or sourced.

• Claims Bio-Based Content →

  medium risk

Minimum authority

Third-party verified

Should state

Certificate Number · Star Rating · Biobased Carbon Percentage · Valid Until · Product Scope

Date sensitivity

Expiry matters — check the certificate is current.

Always capture the star rating and the underlying percentage — 'OK biobased' alone spans 20% to over 80% renewable carbon.

The star rating measures the share of renewable carbon in total carbon, so products with little organic carbon overall need scrutiny of scope.

Do not conflate with TÜV Austria's OK compost or OK biodegradable marks, which certify different properties.