CST’s Aquastore tank designs incorporate recognized standards assuring high quality and long-lasting digester tanks. Our Vitrium™ glass-fused-to steel is the premium coating in the digester tank market. It is a single, strong, integrated glass and steel material fused together at 1,500°F (816°C) in a controlled process furnace. The physical properties of Vitrium are specially suited for digester applications. The hard, inert barrier on both the interior and exterior tank surfaces guards against corrosion. Vitrium internal glass coating is impermeable to liquids and vapors, provides resistance to undercutting caused by corrosion and offers excellent impact and abrasion resistance.