with known compostable materials." (Ref: ASTM D 6002)

The term "composting" is often used informally to describe the biodegradation of packaging materials. Legal definitions exist for compostability, the process that leads to compost. Four criteria are offered by the European Union:
#Chemical composition: volatile matter and heavy metals as well as fluorine should be limited.
#Biodegradability: the conversion of >90% of the original material into , water and minerals by biological