ASTM D6400: the US compostable standard

ASTM D6400 is the US specification for compostable plastics, and the technical basis for BPI certification.

About this product

What the standard requires

ASTM D6400 tests under controlled industrial composting conditions and requires the material to pass biodegradation, disintegration and ecotoxicity.

  • Biodegradation: at least 90% converted to carbon dioxide within 180 days (58 ± 2°C)
  • Disintegration: no more than 10% remains on a 2 mm sieve after 12 weeks
  • Ecotoxicity: plant germination at least 90% of the control, with heavy metals per US EPA 40 CFR Part 503

Certification status

We hold this certification

Certificates are available on request. We do not publish certificate numbers or expiry dates on the website.

Related

Related pages

Compostable Trash Bags

Compostable trash bags produced to a specified market standard.

Materials & Thickness

How HDPE, LDPE and LLDPE differ, and how to convert and choose thickness units.

FAQ

ASTM D6400: common questions

The requirements are similar but the markets differ: EN 13432 covers the European Union and ASTM D6400 covers the United States. The test conditions and referenced methods are set by each standard, so the certificates are separate.

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