Safe and efficient liquid nitrogen handling in an IVF laboratory requires the right PPE, correct transfer techniques, and clear awareness of the asphyxiation and burn risks. Establishing and maintaining consistent safe handling practices is both a regulatory requirement and a fundamental duty of care to laboratory staff.
Before any liquid nitrogen handling, the correct PPE must be in place. This means cryogenic gloves rated for temperatures at or below minus 196 degrees Celsius. Standard insulating gloves or rubber gloves are not adequate and will not protect against cryogenic contact. A face shield is required when there is any risk of splashing, which includes all transfer operations.
During nitrogen transfer between vessels, work slowly and deliberately. Rapid pouring creates more turbulence and increases splashing risk. Fill transfer dewars and dry shippers using a flexible transfer tube or hose where possible. Never seal a container of liquid nitrogen completely, as pressure buildup from evaporation can cause violent pressure release.
Be aware of your surroundings during any nitrogen handling. Know where the oxygen depletion monitor is and what its current reading is. Never work alone with significant volumes of liquid nitrogen in a confined space.
After handling, inspect your PPE for any damage or contamination. Gloves that have been soaked with liquid nitrogen should be allowed to warm to ambient temperature before handling again.
Cryolab supplies cryogenic PPE and safety equipment for UK IVF laboratory environments. Visit cryolab.co.uk“>Cryolab
