Natural flake graphite, micronized to four sizes: 45, 25, 15 and 10 micron. Purity is 96% C(g) and 99% C(g). Micronized graphite powders manufactured by Great Lakes Graphite are used in applications that include: metallurgy, lubricants, electronics, alkaline batteries, lithium-ion batteries, chemical and defense-related industries and fire resistance.