A compostable product is biodegradable in a composting environment, yielding H20, CO2, biomass, and inorganic compounds. The biodegradation during composting should be at a rate similar to other known compostable materials and should not leave visual or toxic residue. To be labeled compostable, a product must meet American Society for Testing and Materials (ASTM) standards D6400 (plastics) and/or D6868 (multi-layer products or packaging). The Biodegradable Products Institute (BPI) compostable certification provides assurance to consumers that the products they buy are third-party verified compostable in commercial composting facilities. A product can display the BPI Compostable Logo if it complies with ASTM D6400 and/or D6868.
- Source: ASTM
- Source: BPI