By Soup Isarangkoon
under the supervision of Dr. Eric Hill
Although a casual dropplet of liquid nitrogen (LN2) is not dangerous, because there is a layer of gas formed between the skin and the LN2 droplet (see Leidenfrost effect), spillage of LN2 on clothes will cause immediate frostibite as clothes touch the skin directly. Take great caution when handling LN2 by wering protective cold-shielding gloves, and always put the lid back on the LN2 jug after each use. CONTACT THE PROFESSOR IMMEDIATELY IF THERE IS A SPILLAGE OF LN2, ESPECIALLY WHEN ON TO CLOTHING!!!
Please familiarize yourself with the parts before proceeding. If there is a question, please ask.
Fistly, unlock the dewar by turning the knob on the side of the wooden frame of the dewar. This would allow the dewar to pivot. Invert the dewar, so the access flange is at the bottom. Now, unscrew the four screws on the surface of the access flange that holds the outer can and the access flange together. Remove the outer can by lifting the can straight up. This will expose the inside of the dewar with the experimental base plate facing upward. Once this is done, go back to the previous page to continue with experiment-specific set up.