Scienza e Tecnologia
Bioplastics successfully meet all EU safety standards
Biodegradable plastics certified for industrial composting according to EU standard EN 13432 have to meet a fixed limit for heavy metals and other toxic and hazardous substances. An ecotoxicity test is also mandatory in accordance with the OECD (Organization for Economic Cooperation and Development) rules[1]. This test examines possible effects of industrial compost on plant growth and its toxicological harmlessness to microorganisms. Agricultural mulch films certified as biodegradable in soil according to EU standard EN 17033 must comply with strict SVHC (substances of very high concern) guidelines. This ensures that the films do not contain harmful substances. Besides a further test for nitrification inhibition, EN 17033 certification also includes a procedure to exclude negative effects on soil organisms. An upcoming EU standard for the home composting of carrier bags (prEN 17427) will summarize all test procedures once again. "Products made of bioplastics thus undergo even more test procedures than conventional plastic products," summarizes von Pogrell.
"The claim that products made from bio-based plastics contain harmful chemicals is untenable because of the numerous tests that are required," criticizes von Pogrell, referring to a study recently published by the University of Frankfurt . The methodology of the study, in which bioplastics products were subjected to migration testing, seems highly questionable as it differs significantly from the methodology of EU testing procedures. "Besides, the test result of the study does not represent a specific characteristic of bioplastics. On the contrary, the different methodology leads to the same result when testing conventional plastic products," explains von Pogrell.
[1] OECD test 208.