Top rated lab dewar flasks

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AI-generated summary · updated July 27, 2026 · verify details before purchase.

1 Best overall
Thermo Scientific Locator 4 Plus Liquid Nitrogen Dewar

4.7/5 $900-$1,200

High-performance LN2 dewar with excellent insulation for long holding time, ideal for laboratory sample storage.
- Exceptional hold time
- Durable construction
- Secure lid design
- Expensive
- Heavy when full
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2 Best budget pick
Bel-Art 11926-0009 Space-Saver Polyethylene Dewar Flask

4.5/5 $100-$150

Affordable plastic dewar ideal for dry ice or LN2 in teaching labs or light use.
- Very affordable
- Lightweight
- Good for dry ice
- Not as durable as metal
- Shorter hold time
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3 Best for long-term storage
Taylor-Wharton SC-4000 Ultra-Dewar Liquid Nitrogen Container

4.8/5 $2,500-$3,000

Large-capacity LN2 dewar with superior insulation for ultra-long holding times in research labs.
- Extremely long hold time
- Large capacity
- Low evaporation rate
- Very expensive
- Bulky
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4 Best for visual monitoring
Cole-Parmer Dewar Flask, Glass, 1L

4.3/5 $80-$120

Transparent glass dewar allowing easy level monitoring, suitable for small volume cryogenic work.
- Transparent for level checking
- Good chemical resistance
- Reasonable price
- Fragile
- Risk of thermal shock
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5 Best for moderate lab use
Thermo Scientific 1359 Liquid Nitrogen Dewar, 35L

4.6/5 $1,500-$2,000

Reliable stainless steel LN2 dewar with robust construction and good holding time for routine lab applications.
- Durable stainless steel
- Good capacity
- Easy to clean
- Moderate price
- Heavier than others
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6 Best for dry shipping
MVE Doble Track 24K LN2 Dewar

4.4/5 $800-$1,100

Designed for dry shipping of samples, with absorbent material to prevent LN2 spills.
- Safe for shipping
- Lightweight
- Good capacity
- Not for long-term storage
- Higher evaporation than regular dewars
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7 Best value pick
Uniscience InnoDewar 20L Liquid Nitrogen Dewar

4.2/5 $400-$600

Affordable mid-range LN2 dewar with decent insulation and easy handling, popular for academic labs.
- Good value for money
- Decent hold time
- Easy to carry
- Build quality could be better
- Lid seal sometimes issues
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8 Best for small samples
CryoSafe 2L Liquid Nitrogen Dewar with Lid

4.1/5 $50-$70

Compact and inexpensive dewar for small volume LN2 transport or short-term storage.
- Very small and portable
- Cheapest option
- Good for personal use
- Short hold time
- Not insulated well
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Buying advice

When selecting a lab dewar flask, consider the intended use: for long-term storage, prioritize hold time and insulation (e.g., Taylor-Wharton). For budget-conscious labs, plastic dewars like Bel-Art offer affordability. Glass dewars allow visual monitoring but are fragile. Always check capacity and evaporation rate for your specific cryogen (LN2, dry ice). Ensure compatibility with your lab's safety requirements and handling equipment.

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Top rated lab dewar flasks

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