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Other common plastics the researchers found: polystyrene, polyvinyl chloride and polymethyl methacrylate, all used in various industrial processes.

Other plastics confirmed in the water in microscopic quantities include polystyrene, polyvinyl chloride and polymethyl methacrylate, also known as plexiglass.

One substance produced this way was polymethyl methacrylate, an acrylic polymer better known as plexiglass.

The colorized works are made of contemporary materials, including plaster casts, synthetic marble, marble, cast bronze, and 3D-printed polymethyl methacrylate, covered with marble plaster and painted in tempera with pigments based on original formulations.

“It is an acrylic, similar to Plexiglas, called PMMA, for polymethyl methacrylate.”