There are several standard test methods used to measure biodegradability. The method generally accepted in Europe is the Organization of European Cooperative Development (OECD) 301A-F test. This test is accepted by product developers and consumers as a “measuring stick” to help the user understand a product’s environmental impact. ASTM D7373 is also gaining acceptance as evidenced by EPA’s inclusion into the 2013 VGP guidelines.
Acceptable or passing levels for these tests are as follows:
| Biodegradability, % | ASTM D7373 | > 60% |
| Biodegradability, % in 28 days | OECD 301A-F | ≥ 60% |
