Don’t focus on the type of plastic or polymer too much. Virgin plastics themselves arent too reactive/biologically active. It’s the additives, plasticizers, and

Don’t focus on the type of plastic or polymer too much. Virgin plastics themselves arent too reactive/biologically active. It’s the additives, plasticizers, and environmental/industrial chemicals they pick up that react/interfere with organisms. And those are largely unregulated and definitely opaque to any end consumer. Not all PET is equal. Source: casual interest, and a partner who’s a biologist working on a chem PhD specifically around measuring the effect of micro/nano plastics in marine organisms.