Choosing the right neck size for a liquid nitrogen tank can save half of the liquid nitrogen!

The size of the neck (opening) of the liquid nitrogen tank directly determines two key issues:

Liquid nitrogen consumption rate (smaller neck opening saves more)

Convenience of retrieval and placement (larger neck opening is more convenient)

How to choose? Remember three sentences
Long term storage with small openings (50-60mm)

Suitable for sample libraries and research institutions

Save liquid nitrogen! Less evaporation by 30% compared to larger diameters

Frequently access the selection port (80-100mm)

Suitable for hospitals and breeding centers

Take samples without getting stuck

Large sample selection mouth (120mm+)

Specialized for organ packaging and large bags

But liquid nitrogen consumes quickly, it's best to have automatic replenishment

Guide to Avoiding Pits
Don't just look at the price! Small necked cans are cheap, but taking samples every day can be frustrating
✔ Choose a neck with anti frost design (to reduce freezing and getting stuck)

Summary in one sentence:

The sample has not moved for several years → small neck opening

Take it every day → Big Neck Mouth