technology
Mass-balance chain of custody
Certified attribution of renewable or recycled feedstock to nominated outputs of an integrated plant, allowing fossil substitution without reformulating products or building dedicated lines.
Where it's used
Bio-content certification and mass-balance traceability (ISCC PLUS, USDA BioPreferred)
How a bio-based claim is made provable — ISCC PLUS chain-of-custody certification over mass-balanced production, radiocarbon measurement of biogenic carbon under ASTM D6866, and the digital product passport regime the EU adopted in July 2026 to carry such claims through the supply chain.
Standardization bodies (ISO/TC 339, CEN/TC 411)
The technical committees and certification bodies — ISO/TC 339, CEN/TC 411, ASTM International, RSB, REDcert — that write the terminology, life-cycle-assessment and mass-balance rules underlying every bio-content and sustainability claim in the bioeconomy.