Pt allows refer to Pt, Pd, Ir, Rh, Os and Ru. Among the minerals in the Pt family that are produced in their natural state are natural Pt(natural allows between Pt members), sulfuric compounds of alc, and arsenides. The former is usually formed through sediments in rocks after the weathering of what had been contained in ultra alkaline rocks. They are extracted as a mixture with Cr and olivines. The latter is extracted from copper nickel sulphide deposits. Pt and Pt alloy devices and equipment used in the glass industry are handled in high temperature for a long time and must have physical and electric characteristics that prevent them from contamination, coloring of the glass, generating bubbles, or issues with wettability or leakage of Pt.