Thermo Scientific Nicolet iS50 User Manual page 18

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iS50 ATR Module
16 iS50 ATR Module User Guide
7. Make sure there is no sample on the crystal and the pressure arm is raised and then press
the ATR Touch Point to start the background collection.
As the collection proceeds, the background data appear in the OMNIC main window.
When the background collection is complete, a message tells you to prepare for the
sample collection.
8. Prepare the sample.
a. Place the sample in the center of the crystal directly under the pressure point. See
"Compatible Samples" for more information. For best results the sample should
cover the crystal completely.
b. Make sure the pressure arm
c. Lower the pressure arm by rotating the pressure control knob clockwise until you feel
and hear it click. The tip should be pressed firmly against the sample.
9. Press the ATR Touch Point to collect the sample spectrum.
When the spectrum is completed, a message asks whether to add it to a window.
10. Choose Yes to add the spectrum to the selected window and complete the workflow.
If your workflow specifies an analysis such as quantify or search, those steps occur
automatically. To see the analysis results, choose the "r" button to the left of the title box
above the OMNIC spectral window.
Pressure arm
Crystal
is in the sampling position.
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