Chromatography Grade Silica Gel is available in highly pure grade in maximum purity range of 99%. The Silica Gel is manufactured by ion exchange process through cation and anion resin. The Silica Gel comes in light, medium and heavy duty grades. The Chromatography Grade Silica Gel has a bulk density of range 400 to 500 gms/litres, 500 to 600 gms / litres and 600 to 800 gms / litres.