Replace the Sample Compartment Windows
The Thermo Scientific Nicolet Summit FTIR Spectrometer has windows on both sides of the sample
compartment that seal the instrument from moisture and other contaminants but allow the infrared beam
to enter and exit the sample compartment. The windows should always be installed, even if your system
is purged with dry air or nitrogen.
WARNING
Avoid fire and explosion hazard.
The infrared source inside the instrument is an ignition source. If you are using
volatile solvents, provide a fume hood or other active venting system that is free of
spark and other ignition sources and prevents flammable vapors from collecting in
the atmosphere surrounding the instrument.
We install potassium bromide (KBr) windows at the factory and run all of our operating and performance
tests with the windows installed. The KBr windows are hygroscopic but have a protective coating. On
this spectrometer, they provide a working spectral range between 8,000 and 350 cm
-1
with no significant
optical absorptions lines.
For optimal spectrometer performance, the sample compartment windows must be clear (not cloudy)
and clean (no dust or fingerprints). If your windows become contaminated, the spectrometer may fail
performance and qualification tests. You can order new windows from us and install them yourself using
the instructions below.
NOTICE
l
Replace sample compartment windows only with replacement parts supplied by us.
Thermo Scientific
Nicolet Summit LITE FTIR Spectrometer User Guide
57
Maintenance
