Platinum print

Platinum prints are prized for their rich tonal scale and durability. Created using a process based on the light sensitivity of a combination of iron oxalate and a platinum salt. After the sensitized paper is exposed, the print is developed and washed to remove residual chemicals, leaving a final image consisting of finely divided metallic platinum. Platinotype was the original platinum paper invented and marketed by William Willis, Jr., and his Platinotype Company of London.