proplatinum

proplatinum

[prō′plat·ən·əm]
(metallurgy)
A nickel-silver-bismuth alloy used as a substitute for platinum.
References in periodicals archive ?
Providing photographers with an outstanding medium for their images, the Photo Paper ProPlatinum, Photo Paper Pro Luster and Photo Paper Pro Premium Matte media are available in widths of 17, 24, 36 and 42-inch rolls, all 100 feet in length.