totally spherical high purity silica - USP L3 pore size 110 Å, pore volume 0,9ml/g, surface (BET) 340m²/g, density 0.47g/ml, pressure stability 800 bar, pH stability 2 - 8; available particle sizes 3µm and 5µm; larger particles (10, 12, 16, 20 , 30 and 50µm) for preparative applications are available as bulk materials.
particle size 5µm.