| 3) Put a puck base, wells up, into one of the low form
table top dewars. Secure the puck lid onto the puck pusher and dip the lid
into a second low form dewar (use the puck separator tool
to split the pucks from the lids).
Fill both dewars with liquid nitrogen, and wait for the boil off to
stop. Cool the puck cane in the tall table top dewar. |
| 4) Secure a specimen cap onto the end of a magnetic
wand and scoop out one crystal. Quickly plunge the crystal into the
first low form table top dewar, which already has the puck in it.
Wait for the boil off to stop, and deposit the crystal in one of the
open wells in the puck. Keep careful track of which crystal is placed
in which well. Repeat step 4 until all wells in the puck are
filled. |
| 5) Lift the lid out of the second low form dewar using
the puck pusher, and attach this to the puck. The pin on the lid will
only fit in one orientation, so you may have to rotate the lid to
match the key. Push the lid firmly into position. You should
feel a "click" when the lid snaps into place. |
| 6) Lift the puck cane out of the tall table top dewar
and insert the complete puck assembly using the bent or straight
cryo tongs. Make sure that the groove at the back of the puck faces
the back side of the puck cane. The puck should go in with the
lid facing up. Note that the puck will fit in the cane in either
orientation, but only six pucks can be accomodated in the cane if the
lid faces down! |
| 7) Repeat until all pucks are filled. Secure the pucks
in place by inserting the puck cane pin. If the cane pin does not
slide in easily, it is usually because one or more pucks are not
snuggly inserted into the cane (although ice blockage in the pin
channel can also cause this). If only six pucks appear to fit in
the shipping cane, the pucks have all been inserted with the puck
lid facing down. The puck lid should face up! |
| 8) Copy the description and contents of each puck
from your written notes to our
web-based database.
|
