Sigma-Aldrich
Platinum-iridium alloy, Pt80Ir20
Platinum-iridium alloy, Pt90Ir10
S-15176 difumarate salt
Silicon nitride-reaction bonded
Stainless Steel-AISI 420 alloy, Fe86.7Cr13.0C0.3
Tantalum
Tetrafluoroethylene-Perfluoro(alkoxy vinyl ether)