Can liquid nitrogen supply tanks transfer biological samples?

2024-03-06 09:43:53

Some users may have noticed that the manufacturer’s instructions for the liquid nitrogen supply tank are for storing and transferring liquid nitrogen;

At first glance, it looks similar to commonly used liquid nitrogen tanks, divided into two types: storage and transportation;

But if you look at it in practice, you will find that the appearance of the liquid nitrogen supply tank is very different from the conventional liquid nitrogen tank, and its liquid nitrogen storage and transfer are also very different. The top of the liquid nitrogen supply tank is replaced by a valve set instead of an open + neck design. Close to sealing.

So, if you are asking, can liquid nitrogen supply tanks be used to transfer biological samples?

The answer is definitely no!

For one thing, it has no openings, so it can’t even store samples!

The key to the YDS liquid nitrogen tank’s ability to store liquid nitrogen is that it has an opening through which the sample enters the inner tank and is immersed in liquid nitrogen. When there is a need for transfer, a transport-type liquid nitrogen tank with a certain shock-absorbing design will be selected. The three-sided support + 50mm small diameter will not cause the daily evaporation loss of liquid nitrogen to be too high. It can also avoid the neck tube cracking and vacuum loss caused by bumps.

The non-open design of the liquid nitrogen supply tank means that it cannot store samples, let alone transfer biological samples.

Secondly, it is not designed for sample storage and transfer!

As mentioned earlier, the liquid nitrogen supply tank is used to store and transfer liquid nitrogen. Its original design is to provide a safer and more efficient liquid nitrogen supply method for universities, laboratories, and sample libraries. It is born as a liquid replenishment device, not a sample Storage container.

In order to ensure the safety and efficiency of rehydration, a low pressure within 0.1MPa, which is different from the traditional Dewar bottle, is used, and liquid nitrogen is vaporized and pressurized internally to avoid external force involvement. A safety valve is also installed to avoid pressure increases caused by misoperation. Come to danger.

Moreover, it is originally manufactured for liquid replenishment. All structures and components of the liquid nitrogen supply tank are only for liquid replenishment. Of course, it is impossible to add an additional sample transfer function to affect the rehydration efficiency and occupy part of the liquid nitrogen storage space.

Summary: Liquid nitrogen supply tanks cannot transfer biological samples, only liquid nitrogen!