The ubiquitous bathtub duck, historically referred to as a rubber duck, is actually often made from plasticized polyvinyl chloride. Our scientists measured the composition of commercial bathtub ducks, investigating the base resin with infrared spectroscopy, plasticizers with gas and liquid chromatography, and fillers with energy dispersive spectroscopy. And, because it is important to know if your duck is impact resistant at both room temperature and cryo-temperatures, we did that testing also. Read more about these results in this application note.