If you're researching how frozen embryos, eggs, or sperm are shipped internationally, you'll encounter the term "dry shipper" constantly. Understanding what it is — and why it matters — is essential for anyone planning a cryogenic shipment.
Definition: What Is a Dry Shipper?
A cryogenic dry shipper is a vacuum-insulated container designed to transport biological samples at cryogenic temperatures (below -150°C) without containing free-flowing liquid nitrogen. Instead, liquid nitrogen is absorbed into a porous material inside the vessel, which slowly releases cold nitrogen vapour to maintain extreme cold.
Dry Shipper vs. Liquid Nitrogen Dewar
The key difference:
- Dry shipper: Uses nitrogen vapour only — safe for commercial air travel as cabin baggage
- Liquid nitrogen dewar: Contains liquid nitrogen — classified as hazardous material with strict airline restrictions
- Dry shipper hold time: Typically 5–7 days below -150°C without refilling
- Dewar hold time: Longer, but impractical for most international patient shipments
Why Dry Shippers Are Used for IVF Transport
Vitrified embryos and eggs must remain below -150°C to stay in a stable glass-like state. A quality dry shipper provides a sealed, temperature-stable environment that protects against external heat while being portable enough for a courier to hand-carry through airports and customs.
ARKGlobal uses IATA-certified MVE dry shippers with 5G temperature monitoring on every shipment. Contact us to discuss your transport requirements.
We're Here to Help© ARK Global Asia. This article is intended for informational purposes. Regulatory requirements vary by country and may change. Always confirm current import/export requirements with your fertility clinic and the relevant regulatory authority before planning a shipment.