Sigma-Aldrich
Platinum-iridium alloy, Pt90Ir10
Platinum-rhodium alloy, Pt60Rh40
Platinum-rhodium alloy, Pt83Rh17
Platinum-rhodium alloy, Pt87Rh13
Platinum-rhodium alloy, Pt94Rh6
Platinum/Rhodium
Plexiglas® Rings with 0.59 mm hole