Thermo Scientific Nicolet iZ10 User Manual page 16

Notice: Do not spill liquid nitrogen on or near the detector window. If the window's O-ring
seal is cooled very rapidly, the dewar may lose its vacuum and expose the detector element to
damaging atmospheric pressure.
3.—Insert the funnel into the detector dewar, and pour the liquid nitrogen slowly into the
funnel. (A small amount of liquid nitrogen typically spills out of the funnel. This will not
harm your instrument.)
Fill the funnel and then let it drain completely two or three times. Wait until the vapor
plume disappears and then repeat until the dewar is filled.
4.—Remove the funnel.
5.—Wait until the vapor plume disappears, and then replace the plastic stopper and close the
dewar cover.
6.—Wait 20 minutes, and then repeat the preceding steps to make sure the dewar is
completely filled.
12 Using Your Nicolet iZ10 Module Thermo Fisher Scientific