> okay would be a liquid nitrogen leak, explosive risk oxygen condensing out of the atmosphere I don't think that's very likely. I used to work in cryogenic l

> okay would be a liquid nitrogen leak, explosive risk oxygen condensing out of the atmosphere I don't think that's very likely. I used to work in cryogenic labs and a simple LN2 leak would not have been considered a danger (except in a confined space). The only concern we had related to LO2 condensation was to never let a cryostat warm up or cool down while full of air.