“…It is important to note that there are several other important polymers which may require additional considerations, not covered here by the four prioritised polymers. There is no established priority list of “problematic polymers” or “polymers of concern” and criteria and/or framework for identifying polymers of concern with respect to environmental and human health impacts are currently being proposed for the Treaty and other regulatory bodies [ 3 , 66 , 67 ]. Production volume and microplastic toxicity have been consistently proposed to be included in the criteria.…”