Quartz - SiO2 min. 99.5%: Colour: Super White 96% Mesh: 30 - 60; 30 - 80; 40 - 150; 100 - 200 / 325 residue 1% max B.S.S. Application: Ceramic Tile, Sanitary Ware, Porcelain Table Ware, Insulators, Ceramic Components, Pottery, Ceramic Frit, Paint, Rubber, Pigment, Glass, Silicon Manufacturing etc.