Analyzing Samples
32 Agilent Cary 630 FTIR Spectrometer User’s Guide
2 Clean the sample press tip using an extra-low lint, non-abrasive
wipe and a suitable solvent, such as acetone, methanol, ethanol or
isopropyl alcohol.
3 Clean the sampling window.
CAUTION
Do not break the spectrometer seal and attempt to clean interior surfaces.
Breaking the seal will void the warranty.
Collecting a background spectrum
For instructions on collecting a background using the software, refer
to the Agilent MicroLab PC Software User’s Guide.
CAUTION
To ensure an accurate background spectrum is collected, perform a visual
inspection of the sampling window, looking for any haze or film present from
measuring the previous sample. If a film is observed, repeat the cleaning
procedure on Page 27 until the sampling window is clear of any residue.
Collecting a sample spectrum
To load a sample and collect a spectrum using the ZnSe ATR
accessory:
1 Turn the sample press knob in a counterclockwise direction to
open the sample press so that the tip is elevated slightly from the
ZnSe sampling window (see Figure 5).
2 Place a small amount of material to be measured on the crystal.
The crystal is the clear, circular shaped material held in place by
the surrounding metal disk.
3 Ensure that the sample covers the entire surface area of the ZnSe
crystal.
In the case of a volatile sample, larger amounts of sample can be
applied without concern of leakage or damage to the instrument.
However, using the smallest amount of sample possible will ease
in the cleaning process.
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