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
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
| Model | Capacity | Daily evaporation rate | Neck diameter | Outside diameter | Height | Filled weight | Empty weight |
| LN-10 | 10 L | 0.15 L | 2.25 in | 11.25 in | 23 in | 30.3 lb | 12.5 lb |
| LN-20 | 20 L | 0.2 L | 2.25 in | 15 in | 24.6 in | 60 lb | 23 lb |
| LN-35 | 35 L | 0.25 L | 2.25 in | 18.5 in | 25 in | 94 lb | 31 lb |
| LN-50 | 50 L | 0.4 L | 3.75 in | 18.5 in | 30.5 in | 127 lb | 38 lb |
