18 Feb 2021 --- Zero Waste Europe (ZWE), the European Environmental Citizen’s Organisation for Standardisation (ECOS), and nine other organizations are urging the European Commission (EC) to avoid a flexible “mass balance approach” method in determining recycled content in plastic products. The signatories delivered a joint letter yesterday evening to the EC advising it to establish a “transparent, ambitious, and circular ‘chain of custody’” method instead.