What is the real cost of liquid nitrogen spillage during manual transfers and how do dispensing systems eliminate it?
Manual transfer of liquid nitrogen using a ladle or flexible hose from a supply cylinder to a storage dewar is standard practice in smaller IVF laboratories, but the LN2 lost to spillage, flash vaporisation, and overfill is rarely measured. In a facility performing manual top-ups three times per week, spillage losses of 5 to 15 per cent of each pour are common, particularly when transferring into narrow-neck vessels or when the receiving vessel is not pre-cooled. At £0.50 to £1.00 per litre, the annual cost of spillage in a laboratory managing six to eight storage vessels is not trivial.
The more significant cost is staff exposure time. Every manual LN2 transfer represents a period during which cryogenic burns, oxygen depletion risk, and splash injury are live hazards. A pressurised dispensing system that delivers a controlled flow of LN2 through a fixed nozzle reduces transfer time, eliminates uncontrolled splashing, and allows the operator to maintain a safe distance whilst the vessel fills. Cryolab supplies the CryoCrest LN2 dispensing range for laboratories looking to replace manual ladle transfer with a controlled dispensing process. The correct cryogenic PPE remains mandatory during any LN2 transfer regardless of the dispensing method used. Contact Cryolab to specify the right dispensing solution for your facility’s vessel configuration and throughput.
