Skilled individuals can make balloon animals to dunk in liquid nitrogen. Otherwise, just dunk the balloon "snake." Place the Dewar on the lecturn shelf. Inflate a balloon. If using the twisting ...

And again, avoid a disaster by having a safe container to store the liquid nitrogen, including a styrofoam cooler or a Dewar, ...

liquid nitrogen is used for carrying out chemical reactions requiring low temperatures; liquid hydrogen and oxygen are used as fuels for rockets. Small vacuum flasks and Dewar flasks are used for ...