Liquid Nitrogen Storage Dewars

Janis offers a complete line of aluminum liquid nitrogen storage Dewars. These Dewars are available in two configurations:

One configuration includes a Dewar with an NW-40 top flange and a special adapter that allows the Dewar to be used with a Janis SuperTran high-efficiency transfer line. The transfer line adapter includes a 0.5 in o-ring compression seal to provide a pressure-tight seal around the 0.5 in diameter storage Dewar leg of the Janis SuperTran transfer line. The transfer line adapter also includes a pressure gauge, 4 psi safety pressure relief valve, and a vent valve that can also be used to pressurize the Dewar by connecting it to a N2 gas cylinder with a regulator (cylinder and regulator are not included).

The other configuration includes a standard Dewar with a LN2 withdrawal device. The withdrawal device is useful for filling smaller containers with LN2 from the Janis Dewar. The withdrawal device includes a pressure gauge, safety pressure relief valve, a short stainless steel tube for dispensing LN2, and a shutoff valve. Please note that the Dewar that is configured for the withdrawal device does not have the NW-40 top flange, and is not compatible with the Janis transfer line adapter.

Model LN-10 liquid nitrogen storage Dewar with optional liquid withdrawal

LN-10 Liquid Nitrogen storage Dewar withdrawal device

Model LN-50 liquid nitrogen storage Dewar including an adapter for Janis Model FHT-ST transfer line, a capacitive LN2 level sensor, and a level meter

LN-50 Level Sensor


ModelCapacityDaily evaporation rateNeck diameterOutside diameterHeightFilled weightEmpty weight
LN-1010 L0.15 L2.25 in11.25 in23 in30.3 lb12.5 lb
LN-2020 L0.2 L2.25 in15 in24.6 in60 lb23 lb
LN-3535 L0.25 L2.25 in18.5 in25 in94 lb31 lb
LN-5050 L0.4 L3.75 in18.5 in30.5 in127 lb38 lb


Janis — a Lake Shore Company
LN-35 Liquid Nitrogen Storage Dewar

Model LN-35 liquid nitrogen storage Dewar including adapter for Janis Model FHT-ST transfer line