Zinc Purity and Impurities Specification Zinc Purity: Range 1: 99.96% - 99.97% Range 2: 99.97% - 99.98% Range 3: 99.98% - 99.99% Impurities: Pb (Lead) For Range 1: Min 230 ppm - Max 300 ppm For Range 2: Min 160 ppm - Max 230 ppm For Range 3: Min 75 ppm - Max 160 ppm Fe (Iron) For Range 1: Min 25 ppm - Max 30 ppm For Range 2: Min 20 ppm - Max 25 ppm For Range 3: Min 10 ppm - Max 20 ppm Cu (Copper) For Range 1: Min 15 ppm - Max 20 ppm For Range 2: Min 10 ppm - Max 15 ppm For Range 3: Both Min and Max at 10 ppm Cd (Cadmium) For all ranges (Range 1, 2, and 3): Min 5 ppm - Max 10 ppm.
