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 0019 (OTTO) Platinum wire, 0.0508mm (0.002in) dia, hard, 99.95% Cas 7440-06-4 - used for flame tests and especially bead tests of minerals and other unidentified inorganic compounds.