... quality control with national reference material. Applications Metallic Powders Aluminum, zircon, nickel, tungsten, zinc, molybdenum, ... copper, rare metal, alloy, metallic oxide Non-metallic powders Talc, kaolin, calcium carbonate, coal, fluorescent, brucite, ... diatomite, zirconium silicate, corundum, mica, titanium oxide Other powders Soil, pigment, sulfur, explosive, western medicine, Chinese ...