La matière utilisée pour ce démonstrateur GEM est un PS recyclé noir, un grade d'injection aux caractéristiques suivantes :  MFI 6-7g/10min, Izod entaillé grade 6-8 kJ/m².

KIBISAN® PN-107 is a Styrene Acrylonitrile (SAN) product. It is available in Africa & Middle East, Asia Pacific, Europe, Latin America, or North America.

Characteristics:
-Ignition Resistant - UL94 "V0" rated.
-Excellent Flow Properties
-Free of DBDPO, PBDE & TBBA, complies with RoHS directive of EU

Styrolux 684D is a thermoplastic styrene-butadiene block copolymer which is suitable for injection molding, extrusion, and thermoforming.

Polystyrene is a polymer from the styrenics family that offers excellent transparency coupled with a very competitive cost. It has medium mechanical properties making PS rigid and brittle.