LN2 Capacity 90L. Stainless Steel self-pressurising LN2 Supply Dewars. The Cryostor Series are designed as a main laboratory storage supply of LN2. Using the latest design technologies for optimum performance combined with strength and durability the range offers mobile storage for LN2 from the loading bay to point of use. Each Cryostor model from the smallest 30 litre to the largest 240 litre model features a fully configured safety head for the storage and dispensing of liquid nitrogen.