3L Liquid Nitrogen Dewar - Compact LN2 Container for Labs

In this review of the Magula 3L Liquid nitrogen dewar the bottom line is clear: this compact LN2 container is aimed at labs, farms, and clinics that need a small, durable vessel for short- to mid-term cryogenic storage. The reviewer found the defining advantage to be its narrow 50mm caliber and aerospace aluminum construction, which together reduce boil-off and extend static hold time compared with wider, less optimized dewars. It is a practical choice for users who need portability, six canisters for organized sample storage, and a rugged build for routine handling.

Key Features

• Compact 50mm caliber: The narrow bore helps minimize liquid nitrogen evaporation so samples remain colder for longer when kept sealed.
• Aerospace aluminum body: High-strength aluminum alloy provides durability and a lower evaporation rate compared with lower-grade materials.
• Six canisters included: Four perforated canisters for biological specimens plus two sealed canisters let users separate dipped samples from open storage.
• Optimized finish: Aviation paint and fewer welds produce a neat exterior that resists corrosion and is easier to clean after field use.
• Wide application: The dewar suits farms, research institutes, labs, hospitals and beauty salons for small-scale cryogenic tasks.

Who It's For

This dewar is best for technicians, veterinarians, farm operators and small labs that need a portable LN2 solution for semen, tissue, and small specimen storage. The compact diameter and included canisters make it practical for routine transfers and field use where space and weight matter.

It may not be the right choice for users who require very large storage volumes or long-term cryostorage of dozens of samples, since the 3L capacity and narrow bore are optimized for compact, not bulk, storage. Also, due to transport rules the unit ships empty, so buyers must source liquid nitrogen locally.

Pros & Cons

Pros

• Compact narrow caliber reduces boil-off and improves static hold time in sealed conditions.
• Aircraft-grade aluminum construction is durable and contributes to a slower evaporation rate.
• Six canisters (four perforated, two sealed) provide organized sample separation and dipping options.
• Attractive finish with fewer welds makes the unit easier to maintain.

Cons

• 3L capacity is limited for large sample inventories or long-term storage needs.
• Ships empty due to air transport restrictions, so users must obtain LN2 separately before first use.

Specifications

Capacity	3L
Caliber (internal diameter)	50mm (approx)
Canisters included	6 canisters (4 perforated, 2 sealed)
Canister size	Diameter 1.4' in (36 mm) x Height 4.33' in (110 mm)
Material	Aerospace aluminum alloy
Finish	Aviation paint, optimized welds

Our Verdict

The Magula 3L Liquid nitrogen dewar is a sensible, value-focused option for small labs, farms and clinics that need a portable LN2 container with organized storage. Its narrow 50mm caliber and aluminum construction reduce evaporation and improve durability, while the six included canisters make sample management straightforward; those needing large-scale or long-term storage should consider a larger dewar.

Frequently Asked Questions

Does the dewar come filled with liquid nitrogen?
No, the unit ships empty due to air transport restrictions and buyers must obtain LN2 locally before use.

How many canisters are included and what are their types?
Six canisters are included: four with holes for biological specimens and two sealed canisters for dipping or sealed storage.

What is the main advantage of the 50mm caliber?
The smaller diameter reduces surface area and helps lower liquid nitrogen evaporation, extending storage time in sealed conditions.