Glass beads 0,25 - 0,5 mm

Glass beads, pearls of lime-soda-glass Ø 0,25 - 0,5 mm Pearls of lime-soda-glass. Specific weight approx. 2.5 g/cm3. Technical data: Bulk weight afh. of size 1.46-1.51 kg/l. Refractive index 1.5188. Chemical composition: SiO2 72,3 %, Na2O 13,3 %, CaO 8,9 %, MgO 4,0 %, other 1,5 %.