LN2 Storage Dewar
vacuum-insulated, multiple layers
DSW provides high-quality cryogenic tanks, dewars, cryogenic vessels, and liquid nitrogen containers for research, medical, biotechnology, instrumentation, superconductivity semiconductors, home care, and food service industries.
What is Nitrogen Dewar?
A Liquid Nitrogen Dewar is precisely engineered to store or transport small quantities of cryogenic liquid, typically liquid nitrogen (LN₂), but also liquid argon (LAR), liquid oxygen (LOX), and liquid helium (LHE).
With its low boiling point, liquid nitrogen requires careful handling, and our Dewars are designed to provide optimal storage with maximum thermal insulation.
FEATURE
Boiling Point: Liquid nitrogen’s boiling point is approximately 196°C (321 °F; 77 K).
Purpose: They store cryogens such as liquid nitrogen or liquid helium.
Design: LN2 storage dewars have walls constructed from multiple layers, with a high vacuum between them. This design provides excellent thermal insulation, reducing the contents’ boiling rate.
Safety: LN2 Dewars are designed to manage the gas released safely as the liquid slowly boils. Safety valves allow excess vapour pressure to vent away.
Variety: Cryogenic storage dewars come in various forms, including open buckets, flasks with loose-fitting stoppers, and self-pressurizing tanks.
Applications: They are commonly used in low-temperature physics, chemistry, and other scientific fields.
Storage and Handling: Dewars are designed to keep liquid nitrogen at this low temperature.
They can maintain a constant temperature of 77 K (equivalent to −196°C) by allowing the liquid to boil slowly.
Depending on their size and design, vacuum flasks (dewars) can hold liquid nitrogen for varying durations.
Cryo Nitrogen Dewar sizes
| Model | Volume (L) | Dimensions (mm) (D × H) | Pressure (MPa) | Safety Valve Pressure (MPa) | Burst Disc Pressure (MPa) | Evaporation Rate | Empty Weight (kg) |
| DPL450-175-1.37 | 175 | 508 × 1498 | 1.37 | 1.59 | 2.5 / 2.41 | ≤2.1% | 115 |
| DPL450-175-2.3 | 175 | 508 × 1498 | 2.3 | 2.41 | 3.84 | ≤2.1% | 138 |
| DPL450-195-1.37 | 195 | 508 × 1624 | 1.37 | 1.59 | 2.5 / 2.41 | ≤2.1% | 121 |
| DPL450-195-2.3 | 195 | 508 × 1624 | 2.3 | 2.41 | 3.84 | ≤2.1% | 145 |
| DPL450-210-1.37 | 210 | 508 × 1718 | 1.37 | 1.59 | 2.5 / 2.41 | ≤2.1% | 128 |
| DPL450-210-2.3 | 210 | 508 × 1718 | 2.3 | 2.41 | 3.84 | ≤2.1% | 153 |
| DPL450-210-2.88 | 210 | 508 × 1718 | 2.88 | 3.1 | 4.9 | ≤2.1% | 173 |
Dewar Vessels and Usage
Dewar vessels, or cryogenic flasks, are specialized vacuum containers for storing and transporting cryogenic liquids such as liquid nitrogen, argon, and oxygen. These containers are widely used in applications where precise cryogenic temperatures are essential, such as superconductivity research, fertility treatments, and in-home oxygen delivery.
What Is Nitrogen?
Nitrogen (N2) is a versatile gas used in numerous applications and industries. We’re always ready to supply it as new applications arise, offering multiple purities and delivery modes for maximum flexibility.
How are cryogenic dewar flasks/containers used?
Cryogenic dewars store, dispense, or transport cryogenic gases such as liquid nitrogen, liquid oxygen, liquid helium, and liquid hydrogen.
A researcher might use a dewar to dispense liquid nitrogen or helium for an experiment.
There are dewars made specifically for studying superconductivity.
Dewar containers store embryos for fertility treatments.
Truck-mounted dewars with specialized hoses deliver oxygen for in-home use.
Portable dewars with casters and handles dispense cryogenic liquids across a factory or lab.
