Lavachem 11 SG, Small porous, White, Blue, Orange, Granular or unshaped standard Glassy, hard, irregular shaped granules with a very high purity of approx. 99.5% SiO2 (dry basis) and an internal surface area of approx. 800m²/g. Because of its very large surface area Silica gel exhibits a high adsorption for water vapour. Silica gel can be reactivated without significantly impairing the efficiency. It is therefore very economical, easy to dispose of and without any known adverse effects on the environment. Supplied as desiccant absorbent, silica gel conforms to US MIL-D-3464E, BS-2540, DIN 55473