When it comes to transporting temperature-sensitive materials such as biological samples, vaccines, tissues, and organs, it is crucial to maintain a stable and low temperature throughout the shipping process to ensure their integrity. This is where cryogenic dry shippers come into play. A cryogenic dry shipper is a specialized container designed to safely transport cryogenically frozen materials at ultra-low temperatures, typically below -150°C, without the need for external power supply or refrigeration.
What is a cryogenic dry shipper?
A cryogenic dry shipper, also known as a liquid nitrogen dry shipper, is a vacuum-insulated container that utilizes liquid nitrogen as the coolant to maintain a stable and low temperature inside the shipping chamber. The vacuum insulation minimizes heat transfer from the surrounding environment, while the liquid nitrogen provides the necessary cooling to keep the contents frozen during transport.
How Does a cryogenic dry shipper Work?
The working principle of a cryogenic dry shipper is based on the properties of liquid nitrogen, which has a boiling point of -196°C at atmospheric pressure. The liquid nitrogen is stored in a reservoir within the shipper and vaporizes into gaseous nitrogen as it absorbs heat from the surroundings. The gaseous nitrogen then escapes through a pressure relief valve, while the vacuum insulation prevents heat ingress into the shipping chamber.
Key Features of a cryogenic dry shipper
1. Vacuum Insulation: The vacuum insulation in a cryogenic dry shipper reduces heat transfer by minimizing conduction and convection, allowing the container to maintain a stable and low temperature for an extended period.
2. Liquid Nitrogen Cooling: The use of liquid nitrogen as the coolant ensures that the contents inside the shipper remain frozen throughout the shipping process, even in ambient temperature environments.
3. Lightweight and Portable: Cryogenic dry shippers are typically lightweight and portable, making them suitable for air and ground transportation of temperature-sensitive materials.
4. Secure Sealing Mechanism: The shipping chamber of a cryogenic dry shipper is equipped with a secure sealing mechanism to prevent leaks and maintain the integrity of the contents.
5. Temperature Monitoring: Some cryogenic dry shippers come with built-in temperature monitoring systems to track and record the temperature inside the container during transit.
Applications of Cryogenic Dry Shippers
Cryogenic dry shippers are used in a wide range of industries and applications where maintaining ultra-low temperatures is critical for preserving the integrity of the materials being transported. Some common applications of cryogenic dry shippers include:
1. Biological Samples: Cryogenic dry shippers are extensively used to transport biological samples, such as cells, tissues, and DNA, for research purposes and medical diagnostics.
2. Vaccines and Pharmaceuticals: Cryogenic dry shippers are employed to transport vaccines, drugs, and other pharmaceutical products that require strict temperature control to maintain efficacy.
3. Organ Transplants: Cryogenic dry shippers are essential for transporting organs for transplant surgeries, ensuring that the organs remain viable and healthy for the recipient.
4. Genetic Material: Cryogenic dry shippers are used to transport genetic material, such as sperm and embryos, for assisted reproductive procedures and conservation programs.
5. Research and Development: Cryogenic dry shippers play a crucial role in transporting laboratory reagents, chemicals, and samples for research and development projects in various fields.
Advantages of Using Cryogenic Dry Shippers
1. Long-Lasting Cooling: Cryogenic dry shippers can maintain a stable and low temperature for several days, allowing for extended transport times without compromising the integrity of the contents.
2. No External Power Required: Unlike conventional refrigerated shipping containers, cryogenic dry shippers do not require an external power supply, making them suitable for long-distance transport and remote locations.
3. Compact and Versatile: Cryogenic dry shippers are compact and versatile, making them easy to handle and transport by air, ground, or sea.
4. Cost-Effective: Cryogenic dry shippers are cost-effective compared to specialized refrigerated containers, making them an economical choice for transporting cryogenically frozen materials.
In conclusion, cryogenic dry shippers are essential tools for transporting temperature-sensitive materials at ultra-low temperatures. Their efficient cooling, lightweight design, and versatile applications make them a preferred choice for industries such as healthcare, biotechnology, and research. By selecting a high-quality cryogenic dry shipper and following proper handling and storage procedures, organizations can ensure the safe and reliable transport of their valuable cryogenically frozen materials.