Bio-based Content

Bio-based content is the proportion of carbon in a material that originates from renewable biological sources rather than fossil carbon. The internationally recognised method is ASTM D6866 (radiocarbon analysis).

A stated percentage is only meaningful when the test method, the basis of calculation, and the scope (product vs. polymer vs. foam) are clear.

Higher bio-based content is not, by itself, a quality or environmental performance score. Performance, durability, safety and full life-cycle impacts must still be evaluated.

Why Percentage Alone Is Not Enough

The calculation basis must be stated (polymer only, finished foam, or including additives).
Test method and laboratory accreditation matter.
Bio-based content does not determine end-of-life behaviour.
Performance requirements of the application remain primary.