EN 13432 comprises several essential criteria that materials must meet to be deemed compostable:
Biodegradability: The material must break down into carbon dioxide, water, and biomass through microbial action within a specific period. Disintegration: The material must physically disintegrate during composting without leaving visible residue. Ecotoxicity: The resultant compost must not be toxic to plant growth, ensuring safety for the environment. Heavy Metal Content: The material must not contain harmful levels of heavy metals or other toxic elements.