Liquid phase and gas phase are the two cryopreservation methods of liquid nitrogen tanks, which have attracted much attention; They have the same carrier – liquid nitrogen tank, the same refrigerant – liquid nitrogen.

There are differences in sample preservation and structural design. Today, we will have a pk of Liquid Phase and Vapor Phase LN2 Freezer!

1. Material:

The liquid nitrogen tank pays more attention to the volatilization of liquid nitrogen, and uses aviation aluminum alloy with better thermal insulation performance.

Vapor Phase LN2 Freezer, which is more load-bearing, uses 304 stainless steel which is less insulated than aviation aluminum but better load-bearing.

2.Capacity:

Liquid nitrogen tank, traditional freezing mode, immersion storage, that is, the sample is stored below the liquid nitrogen level and completely covered by liquid nitrogen;

Vapor Phase LN2 Freezer, model 350~1880L, minimum capacity 350L, can store 13000 cryovials and 111312 straws.

3.Freezing mode:

Liquid nitrogen tank, traditional freezing mode, immersion storage, that is, the sample is stored below the liquid nitrogen level and completely covered by liquid nitrogen;

Vapor Phase LN2 Freezer, a new cryopreservation mode, vapor-phase cryopreservation, the samples are stored independently of liquid nitrogen, the sample storage area is located above the liquid nitrogen area, and the gas generated by the volatilization of liquid nitrogen is used to achieve low temperature, which is safer and more stable.

4.Sample management:

Liquid nitrogen tanks all rely on manual labor, whether it is taking samples, recording data, and replenishing liquid nitrogen.

Vapor Phase LN2 Freezer manages samples intelligently, with an intelligent monitoring management system to control fluid replenishment, record temperature curves, sample data, etc.

5.Internal structure:

Liquid nitrogen tank, a vacuum insulated storage tank, the sample is not partitioned with liquid nitrogen.

Vapor Phase LN2 Freezer, the interior is divided into sample storage and liquid nitrogen storage areas, there are trays between the two areas, and there are rotating bearings to help rotate.

Judging from the PK results of liquid phase and gas phase liquid nitrogen tanks, each has its own advantages and disadvantages, and it is still necessary to look at it according to needs!