One of the most common questions about dry shippers in both the human fertility and veterinary reproduction sectors is whether they can be taken on commercial flights, either in the hold as checked freight or as carry-on baggage. The answer is yes, with conditions, and understanding those conditions is essential for anyone arranging international shipment of cryopreserved biological material.
The key regulatory framework governing the air transport of dry shippers is the IATA Dangerous Goods Regulations, published annually by the International Air Transport Association. Dry shippers are classified differently from standard liquid nitrogen containers precisely because they contain no free liquid nitrogen. A properly charged and drained dry shipper falls under IATA classification as a non-spillable cryogenic vessel, which carries significantly fewer restrictions than a vessel containing free cryogenic liquid.
For a dry shipper to be accepted for air transport, the following conditions must typically be met:
The vessel must contain no free liquid nitrogen. This is the fundamental requirement. If a dry shipper leaks free nitrogen during handling, it can create an oxygen-depleting environment in the aircraft hold. A properly charged and drained dry shipper has no free liquid and therefore presents no such risk.
The vessel must be clearly and correctly labelled. Labelling requirements include identification of the contents as a biological substance if applicable, the shipper and receiver details, and appropriate cryogenic and directional labels. For biological samples such as embryos or sperm, additional labelling as Biological Substance Category B may apply depending on the nature of the contents.
Documentation must accompany the shipment. This typically includes a shipper declaration or air waybill with the appropriate descriptions, and for biological material, any import or export permits required by the destination country.
The vessel must not exceed airline-specific size and weight restrictions. These vary by carrier and must be checked before booking.
For hand-carry on commercial aircraft, dry shippers are generally accepted in the cabin subject to airline approval and security screening. Travelling with embryos or gametes as hand-carry is practised routinely by fertility couriers and patients in several countries, though UK clinics typically use professional courier services for HFEA compliance reasons.
For veterinary semen imports into the UK from third countries, additional APHA import health certificate requirements apply regardless of the transport vessel used.
If you are arranging international shipment of cryopreserved material and need a dry shipper with a long enough hold time for multi-leg journeys, Cryolab stocks units with hold times exceeding 72 hours. Browse the full CryoStork dry shipper range today.
