“Compostable plastics” are a subset of biodegradable plastics designed to biodegrade under controlled conditions (European Commission, 2022). Compostable plastics are considered those plastics which have been tested and adhere to international standards for biodegradation in an industrial composting facility. In addition, compostability may be certified by a third party. While compostable plastic waste does not contribute to the soil quality of the compost, it can be composted together with organic waste. For compostable plastic waste to be fully composted together with organic waste, the composting must happen under specific conditions of temperature, moisture, oxygen level and microbial activity, normally found in controlled industrial composting facilities. (Source: Technical guidelines of Basel Convention for the identification and ESM of plastic wastes and for their disposal (draft updated version of 23 February 2023, UNEP/CHW/PW-SIWG.4/3 1)