Agilent Technologies 4500 Series Operation Manual page 40

Analyzing Samples
Figure 13. Applying a sample to the DialPath bottom window
Although it is safe to run a variety of liquid samples, including,
aqueous solutions or even thick pastes such as grease, the DialPath is
not to be used with any solid or powder samples, such as tablets. Use
of the DialPath with solid samples will damage the ZnSe windows or
modify the pre-set transmission pathlength.
The top and bottom windows are made from ZnSe. ZnSe can be damaged by
CAUTION
samples with a pH below 4 and above 9. Only measure samples with a pH
between 4 and 9.
ZnSe windows can be easily scratched by hard or abrasive samples. Avoid use of
CAUTION
samples that may scratch the surface of the windows.
Do not break the spectrometer seal and attempt to clean interior surfaces.
CAUTION
Breaking the seal will void the warranty.
40 Agilent 4500 Series FTIR Operation Manual