1. Liquid Nitrogen Transport

2. Liquid Nitrogen Presents Major Safety Concerns
Extreme temperature (-196°C)
Rapid evaporation and suffocation (1 L liquid  25 cubic ft)
Ted Pella Inc. “Safe Handling of Liquid Nitrogen.”

3. Transport – Plan for the Worst
If the elevator were to get stuck while you were riding with a liquid nitrogen dewar, the nitrogen could eventually evaporate and cause suffocation. When you absolutely must use the elevator when transporting liquid nitrogen, send it to the destination floor alone with a sign advising others not to ride the elevator. You can collect it at the destination floor after going there by stairs or by another elevator.