What are the requirements of the ASTM D6400 standard for measuring compostability?
The ASTM D6400 Standard for compostable plastics specifies three criteria for compostability 1. Mineralization • At least 90 percent conversion to carbon dioxide, water and biomass via microbial assimilation. • Occurs at the same rate as natural materials (i.e. leaves, grass food scraps) • Occurs within a time period of 180 days or less 2. Disintegration • Less than 10 percent of test material remains on a 2mm sieve 3.
