Liquid
Dry Shipper (Containing Liquid Nitrogen)
Dry shippers are insulated cryogenic flasks/containers that contain refrigerated liquid nitrogen absorbed into a porous lining. They are primarily used for the safe transportation of biological or medical specimens. These specialized containers require the liquid nitrogen to be completely absorbed, with no free liquid present within the flask. Furthermore, they must not allow the buildup of pressure and must prevent liquid nitrogen from escaping, regardless of the package's orientation.
Baggage Rules
Cabin Baggage
✓ Allowed
Checked Baggage
✓ Allowed
Packaging Requirement
The liquid nitrogen must be completely absorbed into the container lining, with no free liquid. The container must not allow the buildup of pressure and must prevent liquid nitrogen from escaping regardless of the package orientation.
Safety Guide
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1. Ensure your dry shipper contains refrigerated liquid nitrogen fully absorbed into a porous lining. There must be absolutely no free liquid nitrogen inside the container.
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2. Verify that the container used is designed not to allow the buildup of pressure during transport. This is a critical safety requirement.
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3. Confirm that your package is designed and sealed to prevent liquid nitrogen from escaping, regardless of the package's orientation. Eliminating the risk of leaks is essential.
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4. It is normal to observe vapor coming from these containers, as they are designed to allow the escape of gaseous nitrogen. This indicates the container is functioning correctly.
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5. Before transport, carefully inspect the exterior of the container for any signs of damage, cracks, or leaks. Avoid using damaged containers.
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6. Use appropriate personal protective equipment (e.g., cryogenic gloves and face shield) when handling specimens in and out of the dry shipper.
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7. Secure your dry shipper in a manner that minimizes the risk of tipping or damage during the flight.
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8. Adhere to all relevant national and international air transport regulations, specifically referring to provisions like 49 CFR 175.10(a)(24).
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9. For prolonged storage or transport, regularly monitor the temperature and nitrogen levels inside the container.
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10. Keep your shipping documents and safety data sheet readily available to know what to do in case of an emergency.
Frequently Asked Questions
A dry shipper is an insulated container that holds refrigerated liquid nitrogen absorbed into a porous lining. It is primarily used for the safe transportation of biological or medical specimens, such as vaccines, tissue samples, or cell cultures, at cryogenic temperatures. This ensures the integrity of sensitive materials during transit.
Yes, dry shippers can be transported on an airplane under specific conditions. The most crucial requirement is that the liquid nitrogen must be completely absorbed into the container lining, with no free liquid present. Additionally, the container must not allow pressure buildup and must prevent its contents from escaping.
Yes, it is entirely normal for vapor to be seen coming from dry shippers. These containers are designed to allow the escape of gaseous nitrogen, and this phenomenon is an indication that the container is functioning correctly. This controlled venting helps to equalize internal pressure and ensures safety.
When transporting, ensure the container is undamaged, the liquid nitrogen is fully absorbed, and no free liquid is present. The container must not allow pressure buildup and must not leak. Furthermore, it is essential to comply with all relevant air transport regulations, especially specific provisions like 49 CFR 175.10(a)(24).
This information is for guidance only. Your airline may apply different rules. Always check with your airline before travel.
Item Details
Item Name
Dry Shipper (Liquid Nitrogen)
Category
Liquid