Liquid Nitrogen Dewar

Our Liquid Nitrogen Dewar Product Line

Whether you're outfitting a small research lab or an industrial facility, our comprehensive range of liquid nitrogen dewars offers the perfect storage solution for every need. From compact portable units to high-capacity industrial models, each dewar in our product line combines cutting-edge insulation technology with rugged durability.

Small Capacity Dewars (1L-10L)

Designed for maximum portability and convenience, our small liquid nitrogen dewars are ideal for individual researchers and small laboratories where space is at a premium. These lightweight yet robust containers make transporting and handling liquid nitrogen safer and easier than ever before.  

Ideal for individual researchers and small labs, our portable liquid nitrogen dewars include:

• 1 liter liquid nitrogen dewar - Perfect for cryopreservation of small samples
• 2 liter liquid nitrogen dewar - Compact yet practical for routine lab work
• 4 liter liquid nitrogen dewar - Ideal for biological sample storage in research labs
• 5 liter liquid nitrogen dewar - Popular choice for IVF clinics
• 10 liter liquid nitrogen dewar - Excellent balance of portability and capacity

Mid-Range Dewars (20L-50L)

When your application demands greater capacity without sacrificing performance, our mid-range liquid nitrogen dewars deliver the perfect balance. These versatile workhorses are equally at home in core research facilities, hospital labs, and industrial settings where reliable cryogenic storage is essential.  

Our medium-sized liquid nitrogen storage dewars offer:

• 20 liter liquid nitrogen dewar - Ideal for core facilities
• 25 liter liquid nitrogen dewar - Heavy-duty solution for bulk storage and manufacturing applications
• 30 liter liquid nitrogen dewar - Versatile for multiple applications
• 50 liter liquid nitrogen dewar - Extended holding time reduces refill frequency

Large Capacity Dewars (180L-230L)

For operations requiring substantial liquid nitrogen storage, our industrial-grade dewars provide unmatched capacity and efficiency. These heavy-duty tanks are engineered for demanding environments where continuous, high-volume availability is critical.  

For high-volume applications, we offer:

• 180 liter liquid nitrogen dewar - High capacity for bulk storage
• 200 liter liquid nitrogen dewar - Industrial-grade capacity for large-scale manufacturing and hospital central supply
• 230 liter liquid nitrogen dewar - Maximum capacity industrial models
• 240 liter liquid nitrogen dewar - Maximum-capacity storage system for critical industrial and research installations
• 450 liter liquid nitrogen dewar - Ultra-high-capacity cryogenic storage solution for large-scale industrial and scientific applications
• Custom liquid nitrogen transport dewars for specialized needs

Beyond our standard offerings, we also provide custom liquid nitrogen transport dewars tailored to specialized requirements. Whether you need unique dimensions, special fittings, or enhanced durability features, our engineering team can develop a solution to meet your exact specifications.

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FAQ

Q: What is a dewar of liquid nitrogen?

A dewar is a double-walled, vacuum-insulated container specifically designed to store cryogenic liquids like liquid nitrogen (LN₂) at extremely low temperatures (−196 °C / −321 °F). The vacuum between the walls dramatically reduces heat transfer, keeping the contents cold for days to weeks. They come in sizes ranging from 1-liter lab flasks to large 200-liter cylinders.

Q: How much does a dewar of liquid nitrogen cost?

The dewar vessel itself ranges from around $100–$300 for small 10–30 L units to $1,000–$3,000+ for large industrial cylinders. The liquid nitrogen inside typically costs $0.30–$1.00 per liter when purchased from an industrial gas supplier, though prices vary by region and volume. Many suppliers also offer rental dewars.

Q: How long can liquid nitrogen sit in a dewar?

It depends on the dewar's insulation quality and size. A well-maintained dewar will hold LN₂ for anywhere from a few days (small, older units) to several weeks (large, high-quality vessels). All dewars experience some evaporative loss — this is normal. Never seal a dewar airtight, as pressure buildup from evaporation can be dangerous.

Q: Why can't we touch liquid nitrogen?

At −196 °C, direct contact causes immediate cryogenic burns — tissue freezes almost instantly, similar in severity to a thermal burn. Prolonged contact destroys cells and can cause permanent damage. Always wear insulated cryogenic gloves, a face shield, and closed-toe shoes when handling LN₂. Splashes are also a risk, so protective eyewear is essential.

Q: Is using a dewar suitable for beginners?

With proper training and safety equipment, yes. Beginners should start with small dewars, always work in well-ventilated areas (LN₂ displaces oxygen as it evaporates), and never leave a dewar sealed. Reading the supplier's safety data sheet (SDS) and following your institution's or supplier's handling guidelines before first use is strongly recommended.