ISO 16620-3:2015规定了测定塑料产品中生物基合成聚合物中生物基部分含量的方法。这种生物基合成聚合物含量的计算方法基于塑料制品中生物基合成聚合物的质量。 ISO 16620-3:2015适用于由生物基或化石基成分制成的塑料产品和塑料材料、聚合物树脂、单体或添加剂（例如增塑剂或改性剂）。

ISO 16620-3:2015 specifies the method of determining the amounts of biobased part in the biobased synthetic polymer in plastics products. This calculation method for biobased synthetic polymer content is based on the mass of biobased synthetic polymer in the plastics products. ISO 16620-3:2015 is applicable to plastic products and plastic materials, polymer resins, monomers, or additives (e.g. plasticizers or modifiers), which are made from biobased or fossil-based constituents.