26 . Spectrum 100 Series User’s Guide
Sample compartment
The sample compartment (Figure 6) is located at the front of the instrument. You open
the sample compartment by lifting the cover using the recess at the front.
Figure 6 Sample compartment
• The infrared beam enters the compartment through an aperture on the left. After
passing through the sample, it enters the detector area through an aperture on the
right side of the sample compartment.
• Standard accessories are mounted on a baseplate that plugs into the connector on
the rear wall of the sample compartment. There are other accessories that are
mounted in the sample slide or on the sample shuttle.
• The standard baseplate has a sample holder located by a knurled screw.
CAUTION
The Spectrum 100 FT-IR sample compartment windows are composed of
KBr or CsI, which, although coated, can be damaged by high levels of
humidity. If you spill a liquid in the sample compartment, wipe it up
quickly. When working with water–based samples open to the air, either
purge the sample compartment or leave the cover open.
CAUTION
For the Spectrum 100 FT-IR, a relative humidity higher than 75% (or 45%
if your Spectrum100 FT-IR is fitted with CsI optics) can damage the
windows of the sample compartment. If you expect the humidity to exceed
75% (or 45% if your instrument is fitted with CsI optics), continually purge
or desiccate the sample compartment.
The Spectrum 100N FT-NIR sample compartment windows are composed
of CaF
2
, which is relatively resistant to humidity.
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