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Below are the three major requirements set by ASTM D6400:
(1) 90% disintegration during composting per standard ISO 16929 or ISO 20200;
(2) 90% biodegradation per standard ASTM D5338 or ISO 14855 (composting);
(3) No adverse impacts on ability of compost to support plant growth:
a. Test substance shall have concentrations of regulated metals less than 50 % of those prescribed for sludges or composts in the country where the product is sold;
b. Over 90% of germination rate and plant biomass of the resulted composts, per standard OECD 208 with modifications found in Annex E of EN 13432.
Therefore, ASTM D6400 is more like a package that consists of four major tests. At Aropha, we perform ISO 20200 (12 weeks), ISO 14855 (45 days to 6 months), OECD 208 (14-21 days), and metal analysis to fulfill the ASTM D6400 requirements.
▶ Materials that can be tested:
➢ Plastics and many other types of solid materials;
➢ Materials that contain at least 50% volatile organic solids.
To learn more about different types of biodegradation tests, their applicability, biodegradation mechanisms, and many other information such as case studies, publications, and blogs, please check our Aropha Resource Center