If you work in a laboratory or research facility that deals with biological samples, vaccines, or other temperature-sensitive materials, you already know the importance of maintaining proper storage conditions. One of the best ways to ensure the integrity of your samples is by using a liquid nitrogen shipper.
Liquid nitrogen shippers are specially designed containers that can maintain extremely low temperatures for extended periods. They are often used to transport biological samples, vaccines, cells, and tissues that need to be kept at cryogenic temperatures. In this article, we will explore the inner workings of liquid nitrogen shippers, how they work, and why you need one for your valuable samples.
How Do liquid nitrogen shippers Work?
Liquid nitrogen shippers work on the principle of thermosiphon cooling. They are typically made of double-walled, vacuum-insulated stainless steel or aluminum containers that are filled with liquid nitrogen. This liquid nitrogen vaporizes at a temperature of -196°C (-320°F) and creates a cold environment inside the shipper that can keep samples frozen at temperatures as low as -150°C (-238°F) for several days.
The vacuum insulation between the inner and outer walls of the shipper prevents heat from entering the container, while the venting system allows excess gas to escape, maintaining a constant temperature. This continuous evaporation of liquid nitrogen ensures that the samples inside the shipper remain frozen and do not thaw during transit.
Why Do You Need a liquid nitrogen shipper?
Using a liquid nitrogen shipper offers several advantages over traditional storage methods, such as mechanical freezers or dry ice. Here are some reasons why you need a liquid nitrogen shipper for transporting your temperature-sensitive samples:
1. Long-Lasting Freezing Capacity: Liquid nitrogen shippers can maintain stable temperatures for up to several days, unlike mechanical freezers that rely on electricity and can fail during power outages. This makes them ideal for transporting samples over long distances or in remote locations.
2. Safe and Secure: Liquid nitrogen shippers are designed with safety in mind. The thick insulation and sturdy construction protect the samples inside from damage during handling and transport. Additionally, the venting system prevents pressure buildup inside the shipper, reducing the risk of explosion or leakage.
3. Cost-Effective: While the upfront cost of purchasing a liquid nitrogen shipper may be higher than buying dry ice or using a mechanical freezer, the long-term savings are significant. Liquid nitrogen is relatively cheap and widely available, making it a cost-effective option for maintaining cold storage temperatures.
4. Versatile Applications: Liquid nitrogen shippers can be used for a wide range of applications, from transporting cell cultures and tissues in research labs to storing biological samples for in vitro fertilization clinics. They are also commonly used for shipping vaccines, blood samples, and organs for transplant surgeries.
5. Regulatory Compliance: Many regulatory agencies, such as the FDA and CDC, require the use of validated storage containers for transporting biological materials. Liquid nitrogen shippers are compliant with these regulations and provide a reliable way to ensure the integrity of your samples during transit.
Tips for Using a liquid nitrogen shipper
To get the most out of your liquid nitrogen shipper and ensure the safe transport of your samples, follow these tips:
1. Fill the shipper with the appropriate amount of liquid nitrogen to maintain the desired temperature. Overfilling can lead to pressure buildup, while underfilling may cause the samples to thaw prematurely.
2. Inspect the shipper regularly for any signs of damage or wear, such as cracks in the insulation or loose fittings. Replace any damaged parts immediately to prevent leaks or loss of temperature control.
3. Use proper handling techniques when loading and unloading the shipper to avoid damaging the samples inside. Always wear appropriate protective gear, such as gloves and eye protection, when working with liquid nitrogen.
4. Keep a record of the temperature inside the shipper during transit and monitor it regularly to ensure that the samples remain frozen. Use temperature monitoring devices, such as data loggers or thermocouples, to track temperature changes accurately.
In conclusion, liquid nitrogen shippers are essential tools for maintaining the integrity of temperature-sensitive samples during transport. By understanding how they work and following best practices for their use, you can ensure that your valuable samples reach their destination safely and in optimal condition. Whether you work in a research lab, healthcare facility, or biotechnology company, investing in a liquid nitrogen shipper is a smart choice for preserving the quality of your samples.