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Sample Preparation
Note: Temperature control performance is easily
compromised. Therefore it is very important to
keep the Heating/Cooling block and microscope
glass slide clean. Use a soft cloth and IPA (iso-
propyl alcohol) to clean.
The Heating/Cooling block is made from pure
silver, a soft metal. Please take extra care when
cleaning the block to avoid scratching the surface
and therefore compromising the temperature
accuracy of the sample.
Loading a Sample
The Microscope Slide Holder is fitted on to the
LTS420 and the holder should not touch the silver
heating/cooling block, it should hover just above
it.
Note: if necessary the Microscope Slide Holder
can be bent into shape with a little force to help it
to hold the microscope glass slide.
Place
a
standard
microscope
glass
slide
(26x76mm) in the Microscope Slide Holder, use
a spatula and tap on the microscope glass slide to
make sure that it is sitting flat on the heating
block.
Place the sample on top of the microscope glass
slide. Ensure that the sample is as small and as
flat as possible.
Heat flow into or out of the sample is affected by
the amount of sample area in contact with the
temperature controlled surface.
Place a W16G (16 x 0.17mm) or a W22G (22 x
0.17mm) glass cover on top of the sample and
gently tap the top with the back of the tweezers to
disperse powder samples. This is to ensure good
thermal
contact
of
irregularly
shaped
samples and to create a flat surface for the
microscope lens to focus on.
Accurate temperatures can be obtained by
keeping the sample as small and flat as possible.
10
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