38
Using a pair of tweezers carefully lift the G7T
about 1mm off the silver heating block and slide
the W7S 7mm sapphire window underneath the
end of the sample holder. It should clip into
place.
If necessary use the edge of the vacuum tweezers
sucker to locate the W7S into the sample holders..
Adjust the XY-manipulators (1) by a few turns in
both directions to make sure the W7S is fitted
securely in place.
Now load the sample onto the W7S.
In order to vitrify the sample the sample holder
must be moved to the warm post before cooling
the silver block to the specified temperature.
Do this by pushing the Push-manipulator in to-
ward the stage a couple of mm, give it a quarter
turn and pull out away from the stage.
Now replace the Lid and purge the stage (see
section on purging) ready for cooling.
When silver block is at the desired temperature
you can push/transfer the sample from the warm
post to the precooled silver block and lock the
manipulator into position. When locked, you can
move the sample using both X and Y manipula-
tors.
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