The OPA will certify as oxo-biodegradable and will permit its logo to be used in respect of products which are shown by reports of testing institutions approved by the OPA, to be 1. Oxo-degradable, 2. Oxo-biodegradable and 3. Non eco-toxic.
Oxo-degradation of plastics is defined by TC249/WG9 of CEN (the European Standards Organisation) as "degradation identified as resulting from oxidative cleavage of macromolecules." And oxo-biodegradation as "degradation identified as resulting from oxidative and cell-mediated phenomena, either simultaneously or successively."