Platinum is a chemical element with symbol Pt and atomic number 78. It is dense, malleable, ductile, highly unreactive, precious, gray-white transition metal.
P 4059 (OTTO) Platnium sputtering target, dia 3 inch x 0.5 mm thick, 99.95% - used to make weights and measures standards, electronics industry for electrical contacts, and it is used to manufacture electrodes, manufacture jewelry and also used as catalyst.